Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b9da1e9688dcf0…

MALICIOUS

PDF

32.5 KB Authoring application: ImageMagick
MD5: e81d47eaf273f7e7f242d1e8156f8520 SHA-1: 206d108033b71aace87ea0e10a0d569834bb000b SHA-256: 62b9da1e9688dcf0dda8d6c9047112e0f11fb7bdce96998c103605084166f7d6
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on unrelated domains, suggesting a coordinated effort to distribute content or redirect users. The ClamAV detection and ML classifier further support the malicious nature of the file. No scripts were extracted, but the structure indicates a link farm designed to direct users to potentially malicious 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://6foot7dave.com/uploads/1/3/0/5/130540085/geveruw-wosusobibaxu.pdf
    • http://obgynassociatespc.com/uploads/1/3/0/2/130289233/gukililironebebadud.pdf
    • http://meneerverschuren.nl/uploads/1/3/0/5/130538842/zajokakaroras.pdf
    • http://ilearnfaster.com/uploads/1/3/0/3/130379627/dawonuduraxunafobixa.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/5/130588203/130588203.html#a%C5%9Fk%C4%B1m%C4%B1n+beden+dili

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e0.bin
462fbbb772f3eec3db7c0ba4d05bcd892d54c30965c974bdc4755648ca3e26e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0 8880 bytes