Malicious PDF — malware analysis report

Static analysis result for SHA-256 756d7c7d97003bf8…

MALICIOUS

PDF

17.1 KB Created: 2019-06-04 09:57:46 +01:00 Authoring application: mPDF 5.7
MD5: add0165b66f47cdb4c3b293e705ad4c5 SHA-1: 0d4c5a961d132bcea7906097a805565af502c329 SHA-256: 756d7c7d97003bf88620bd5cb2cdb143733a839229fe8438257db1f00ea86c6e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm that directs users to external PDF files. This behavior is indicative of a SEO poisoning or spamming campaign, likely intended to drive traffic or potentially distribute further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

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/5738731738730738/The-New-Girl-at-Pen-Y-Gant-by-Dorothea-Moore.pdf
    • http://cefasfese.4pu.com/5733731732732737/The-Moore-House-by-Tony-Tremblay.pdf
    • http://cefasfese.4pu.com/4736733735733732/Otherwhen-Amber-House-3-by-Kelly-Moore.pdf
    • http://cefasfese.4pu.com/1730733739737737739/Brenda-My-Darling-The-Love-Letters-of-Fridtjof-Nansen-to-Brenda-Ueland-by-Brenda-Ueland.pdf
    • http://cefasfese.4pu.com/7733730739733738/Ulysses-Moore-Books-1-3-The-Door-to-Time-The-Long-Lost-Map-and-The-House-of-Mirrors-by-Pierdomenico-Baccalario.pdf
    • http://cefasfese.4pu.com/1731732730737739733/Maniac-Magee-by-Linda-Beech.pdf
    • http://cefasfese.4pu.com/1731732730738735733/The-Lion-Tamer-Who-Lost-by-Louise-Beech.pdf
    • http://cefasfese.4pu.com/2730739732730731/Copper-Beech-Grove-A-Different-Kind-of-Love-by-Barbara-Pintoro.pdf
    • http://cefasfese.4pu.com/4738738737738736/The-Magic-School-Bus-In-The-Haunted-Museum-A-Book-About-Sound-by-Linda-Ward-Beech.pdf
    • http://cefasfese.4pu.com/8730734733734734/Hal-Moore-on-Leadership-Winning-When-Outgunned-and-Outmanned-by-Harold-G-Moore.pdf
    • http://cefasfese.4pu.com/5735733737739730/The-Moore-the-Merrier-Moore-Romance-2-5-by-Alex-Miska.pdf
    • http://cefasfese.4pu.com/2731739738731739/Searching-for-Moore-Needing-Moore-1-by-Julie-A-Richman.pdf
    • http://cefasfese.4pu.com/1737730733731736/Moore-to-Lose-Needing-Moore-2-by-Julie-A-Richman.pdf
    • http://cefasfese.4pu.com/5735733736734732/A-Chance-for-Moore-Moore-Romance-1-by-Alex-Miska.pdf
    • http://cefasfese.4pu.com/9736739737732730/Dorothea-VOL-02-by-Cuvie.pdf
    • http://cefasfese.4pu.com/9736739737732732/Dorothea-by-Patrick-Henden.pdf
    • http://cefasfese.4pu.com/2737734736735732/Becoming-a-Writer-by-Dorothea-Brande.pdf
    • http://cefasfese.4pu.com/1739731736730734/Thunderbird-by-Dorothea-Lasky.pdf
    • http://cefasfese.4pu.com/9739733733737731/The-Birthmark-by-Dorothea-Straus.pdf
    • http://cefasfese.4pu.com/1730732734735732730/Romische-Umgangsriten-by-Dorothea-Baudy.pdf

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