Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6dda61cc060266…

MALICIOUS

PDF

41.6 KB Authoring application: Adobe PDF Library 9.0
MD5: d7211a20e85497ffb1d26740adcedb0f SHA-1: 575ec7d72ab44979c75f42ec8b10fdbb9ba7c13e SHA-256: 6d6dda61cc06026696be07242b2c748cee84c7ca88a8551afd298526adf4235f
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body contains numerous embedded URLs pointing to external PDF files, suggesting a phishing or content distribution scheme. While no scripts were explicitly extracted, the nature of the link farm and the phishing detection indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mistykwilliams.com/uploads/1/3/0/6/130621331/2713600.pdf
    • http://nangreypottery.com/uploads/1/3/0/2/130289431/995f4523c3.pdf
    • http://gubilom.healthrating.ru/uploads/2020/01/29/bekin.pdf
    • http://jroperlaw.com/uploads/1/3/0/6/130639444/1323464.pdf
    • http://meshayla.com/uploads/1/3/0/4/130477135/130477135.html#gallstone+pancreatitis+postpartum+icd+10
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011d3.bin
73a3d302d59d21da517d0a563c120691dfb4282d6dc9850161f7aa00ad91d51d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D3 8324 bytes
font_01_sfnt_off00005cb9.bin
ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 16036 bytes

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