Malicious PDF — malware analysis report

Static analysis result for SHA-256 62365ef9d9c16f3c…

MALICIOUS

PDF

36.5 KB Authoring application: Adobe PDF Library 9.0
MD5: d994a70a8ba52ce0ddadf71db8184e92 SHA-1: 7da957b1ca8f4b7417873e6c8c5568b1c1101b7f SHA-256: 62365ef9d9c16f3ce552e45cf545b7170c6a67bd48c0527f9c82b3a2c22385e4
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a pattern identified as a 'PDF_SEO_LINK_FARM'. This suggests a malicious intent to manipulate search engine results or distribute additional malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. While no scripts were explicitly extracted, the nature of the embedded links and the heuristic firings indicate a likely phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://257bennettstreet.com/uploads/1/3/0/3/130313366/detugejevi.pdf
    • http://minocquasurf.com/uploads/1/3/0/6/130621645/d52b4bda7c6.pdf
    • http://mquest.space/uploads/1/3/0/2/130288307/sofozusuxud.pdf
    • http://minchatholdings.com/uploads/1/3/0/4/130477228/xeduwame.pdf
    • http://jason-miller.net/uploads/1/3/0/7/130739750/3384449.pdf
    • http://policetrailer.com/uploads/1/3/0/8/130813991/130813991.html#steelstacks+blast+furnace+room

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c8.bin
123e9bda049182ab5b19fb0917a8b5bd0de7e2b363bfc2e6d2f3c1cc5c964f03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8 9380 bytes

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