Malicious PDF — malware analysis report

Static analysis result for SHA-256 17039f0443234660…

MALICIOUS

PDF

43.3 KB Authoring application: GIMP
MD5: edd8fcce5e6f23811d4f853b36fe8b4d SHA-1: 0c07416a0cdecb63e4e7f2e335105f89fc247c73 SHA-256: 17039f04432346603cdb29b253d3e7c32025fe9b5938c6357fc65b8833cb295f
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 domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing-related malware.

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://rotateproxy.com/uploads/1/3/0/4/130478259/tawutopaf.pdf
    • http://obtek.ca/uploads/1/3/0/3/130379098/jugunuguko.pdf
    • http://blackandchosen.com/uploads/1/3/0/6/130639775/853df82a05b11.pdf
    • http://theempoweredyou.com/uploads/1/3/0/5/130589098/7145197.pdf
    • http://rudynts.com/uploads/1/3/0/4/130435532/sopezupisajubanepi.pdf
    • http://orbpainting.com/uploads/1/3/0/6/130621965/6424977.pdf
    • http://silentlyfallen.org/uploads/1/3/0/5/130588307/130588307.html#assent+land+registry+form

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001210.bin
f20ac700d0768e23c2c366a31c7aa1cc81ef7aa34f477c43ca2365c8a3c25b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1210 7980 bytes

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