Malicious PDF — malware analysis report

Static analysis result for SHA-256 474ae11070974918…

MALICIOUS

PDF

41.6 KB Authoring application: Karbon
MD5: bd7cc2c7c5fe4c565e2dd24bfda5c371 SHA-1: 7a20794601772b44453fd3eae12f13b780b405fa SHA-256: 474ae1107097491828749c3875f5312a623a91e4428a7eb284d73c99f1041e73
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, and exhibits a critical heuristic for a PDF link farm. The document body contains numerous embedded URLs pointing to external PDF files, suggesting a traffic redirection or phishing scheme. The primary intent appears to be driving users to these external links, which likely host further malicious content or phishing pages.

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://qqblog.net/uploads/1/3/0/7/130738732/6447094.pdf
    • http://plumbingleakprotection.com/uploads/1/3/0/2/130291623/nanomoligoder_lelelinofujukod.pdf
    • http://karraschconsulting.com/uploads/1/3/0/5/130543402/7ccae45.pdf
    • http://nabeelreviews.com/uploads/1/3/0/4/130435514/megigonokipovi-titulemikiwemo-wewazekabolu-serezuzukeg.pdf
    • http://kireilifetherapy.com/uploads/1/3/0/7/130740477/tenavopeduxuke.pdf
    • http://murphcooper.com/uploads/1/3/0/6/130620971/wuxulalegodosaz_bitek.pdf
    • http://dreaconti.com/uploads/1/3/0/6/130640023/xenukixubeluba.pdf
    • http://isladelplacer.com/uploads/1/3/0/6/130622066/fetijalitikelow-lelularivit.pdf
    • http://directordean.org/uploads/1/3/0/6/130604606/tozena.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/5/130543045/130543045.html#bob+marley+songs+buffalo+soldier+music+video

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001292.bin
1bbcf8c8fba23da944426262e5a29a7fc245c04b3567d94c1f7b78b6ab2b70b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1292 8300 bytes

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