Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fd06cbcce8a3d6…

MALICIOUS

PDF

32.9 KB Authoring application: LibreOffice Draw
MD5: cd5d518a5ceba7f95a5357be78cbd0db SHA-1: ed96f1114207d690a2333c32cdf76d64bc6974e3 SHA-256: 01fd06cbcce8a3d6176aebd784ecc9f9ce4b94bf4f487e61b38253000a25c462
152 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall and a machine learning classifier. The heuristic PDF_SEO_LINK_FARM indicates the presence of a link farm with 10 external PDF links, suggesting a phishing or malicious content distribution scheme. The document body contains several URLs that are likely part of this link farm, pointing to other PDF or HTML files.

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://crablefoundation.org/uploads/1/3/0/6/130603789/fdc8cc97a7e878.pdf
    • http://sibtender.net/uploads/1/3/0/3/130313590/7d5162acc5579.pdf
    • http://bellasafety.com/uploads/1/3/0/6/130621581/9697090.pdf
    • http://vukipix.jeltii.pro/uploads/2020/01/27/kuxesoripa-xemosix-pekusiretu.pdf
    • http://zimatrix.com/uploads/2020/01/28/7a1fec887bc715.pdf
    • http://tcsonline.net/uploads/1/3/0/2/130270837/130270837.html#skf+bearing+size+6200

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000106c.bin
eb3ddf496b0f20e283a2e5c2318d82f45117351546cb4559dee96979a6c5d640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106C 8256 bytes

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