Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a57d5fa05a1d83e…

MALICIOUS

PDF

39.4 KB Created: 2011-11-21 10:01:28 +02:00 Authoring application: Hawaii.edu Pharmacy (via mPDF 5.0)
MD5: 07b2582039c7476cf30a3821a8ba6228 SHA-1: ce08b79885bb12e28ab12d7bd1a698c6aa6c787a SHA-256: 7a57d5fa05a1d83ebd70a795e5273331263cbfe38d6696d4d8f15c66c22c9e46
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains obfuscated JavaScript that utilizes the getURL function to redirect to 'http://searchglobalsite.com/in.cgi?24'. This behavior is indicative of a downloader or initial access mechanism, where the PDF serves as a lure to trigger the execution of a malicious script. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of its intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • Obfuscated document JavaScript getURL redirector high PDF_JS_OBFUSCATED_GETURL_REDIRECTOR
    PDF document-level JavaScript automatically calls getURL() on an HTTP(S) destination hidden behind percent escapes. The decoded path is a redirector-style endpoint such as /in.cgi or /go.php. This is malicious routing behavior rather than a PDF parser CVE.
  • Suspicious extracted artifact medium 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.
  • JavaScript action low 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://searchglobalsite.com/in.cgi?24
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0027_000.js
52fda692b07c9aa4efbf58a71a700ecc18f276e70eb54dbe1306b0814a6b382b		 pdf-javascript-stream PDF /JS object 27 at offset 0x95F4 136 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long hex-escaped blob(s).
stream_002_off00000df9.bin
ded1520fd68b91798ef4502ba393be29e6762be445da6319489229b957e57958		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDF9 17756 bytes
font_01_sfnt_off00003c0b.bin
a8ed3909966b10c026f46212f55dce68c94667ce1ac039797d3ebfa1d644dacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C0B 17892 bytes
font_02_sfnt_off00006a4b.bin
4ee4e439b16220e78b319060a3d86ba95cd4b8614522dd4fa1d4df274793c516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4B 18720 bytes

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