Malicious PDF — malware analysis report

Static analysis result for SHA-256 5125268698caa9b4…

MALICIOUS

PDF

16.6 KB Created: 2019-11-03 20:32:33 +00:00 Authoring application: mPDF 5.7 First seen: 2021-10-23
MD5: e20b0b3a783acaaf2fe8ac4052782488 SHA-1: c445e5d9a1a6a9f338f0508faf47bfb95f6feeb5 SHA-256: 5125268698caa9b4837bf55fce3fe70493046f75adfcae874e4003d09ee5905c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files hosted on the domain 'cefasfese.4pu.com'. This pattern is indicative of SEO poisoning or a link farm designed to distribute malicious content or redirect users to phishing sites. The ML classifier also flagged this PDF as malicious, supporting the suspicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

Heuristics 2

  • 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.
  • 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://cefasfese.4pu.com/8736739733/Respect-The-Breaking-Point-3-by-Jay-Crownover.pdf In PDF document text
    • http://cefasfese.4pu.com/4739730732737737/Beyond-the-Breaking-Point-Beyond-the-Breaking-Point-1-by-Zena-Wynn.pdfIn PDF document text
    • http://cefasfese.4pu.com/4731734737731/Better-When-He-s-Bad-Welcome-to-the-Point-1-by-Jay-Crownover.pdfIn PDF document text
    • http://cefasfese.4pu.com/2738731/Better-When-He-s-Bold-Welcome-to-the-Point-2-by-Jay-Crownover.pdfIn PDF document text
    • http://cefasfese.4pu.com/1730737739732730/Breaking-Point-by-Kayla-Gibfried.pdfIn PDF document text
    • http://cefasfese.4pu.com/5734734732734/Breaking-Point-by-Dana-Haynes.pdfIn PDF document text
    • http://cefasfese.4pu.com/2739733730736/Breaking-Point-by-Pamela-Clare.pdfIn PDF document text
    • http://cefasfese.4pu.com/3739739733736/Breaking-Point-Article-5-2-by-Kristen-Simmons.pdfIn PDF document text
    • http://cefasfese.4pu.com/2734738732731734/Breaking-Point-Cabarita-Crimes-8-by-C-T-Mitchell.pdfIn PDF document text
    • http://cefasfese.4pu.com/2730737734739736/The-Breaking-Point-Hemingway-Dos-Passos-and-the-Murder-of-Jos-Robles-by-Stephen-Koch.pdfIn PDF document text
    • http://cefasfese.4pu.com/7730731735736/Love-and-Respect-The-Love-She-Most-Desires-The-Respect-He-Desperately-Needs-by-Emerson-Eggerichs.pdfIn PDF document text
    • http://cefasfese.4pu.com/4731737734735738/Female-Nomad-and-Friends-Tales-of-Breaking-Free-and-Breaking-Bread-Around-the-World-by-Rita-Golden-Gelman.pdfIn PDF document text
    • http://cefasfese.4pu.com/1735730732739737/Breaking-the-Rules-The-Breaking-Series-1-by-Nicole-Sturgill.pdfIn PDF document text
    • http://cefasfese.4pu.com/4738730734739737/Breaking-Braydon-Breaking-and-Taking-1-by-M-K-Harkins.pdfIn PDF document text
    • http://cefasfese.4pu.com/1737732732739736/Reckless-Point-Cross-Point-Village-1-by-Cora-Brent.pdfIn PDF document text
    • http://cefasfese.4pu.com/2733734730734732/Counter-Point-Heath-s-Point-Suspense-1-by-Marji-Laine.pdfIn PDF document text
    • http://cefasfese.4pu.com/5737736737739/Point-of-No-Return-Turning-Point-1-by-N-R-Walker.pdfIn PDF document text
    • http://cefasfese.4pu.com/3739733738730734/Point-of-No-Return-Turning-Point-1-by-N-R-Walker.pdfIn PDF document text
    • http://cefasfese.4pu.com/6734734/Asa-Marked-Men-6-by-Jay-Crownover.pdfIn PDF document text
    • http://cefasfese.4pu.com/4731738733739/Jet-Marked-Men-2-by-Jay-Crownover.pdfIn PDF document text

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