Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b7bb01c141ac8f…

MALICIOUS

PDF

565.7 KB Created: 2014-11-03 08:57:11 +00:00 Authoring application: SimLab Software - http://SimLab-Soft.com
MD5: 7cc90d59c1c51a81cc7627176fe0ba90 SHA-1: 57f70cf18a1ad2a3a0f981c5a69d490bb01e3f9d SHA-256: 53b7bb01c141ac8f0bb8811c40b9b4a6c47b7b467844dfa24fadef33bdd3f15b
68 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains embedded JavaScript and U3D content, which is flagged as potentially related to CVE exploits. The presence of JavaScript actions and streams indicates an attempt to execute code. The document body itself is largely unreadable, but the heuristics strongly suggest that the embedded JavaScript is intended to exploit a vulnerability, likely leading to the download or execution of a second-stage payload. The URL http://SimLab-Soft.com is present in the document metadata and as an embedded URL.

Heuristics 7

  • U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED
    PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
  • 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.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 2 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
  • 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.
  • 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://SimLab-Soft.com

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0023_000.js
e5351e47bbe627da8ec275d4970ef28639fe5b9b23a02c737237dbe3780e3c84		 pdf-javascript-stream PDF /JS object 23 at offset 0x8B910 30756 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 6 eval/decoder/string-building token(s).
stream_004_off00000eb4.bin
918589b7f661a323f43aebc79a8a89a4119a2ef5d0bd6bde173bfa0b54d1755a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEB4 271544 bytes
stream_006_off00021646.bin
ca8c3f3b7608a6e8712b027ccbf584818f78e750da1240fcb5d8fa89a0b92747		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x21646 778552 bytes

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