Malicious PDF — malware analysis report

Static analysis result for SHA-256 139d52d532350c78…

MALICIOUS

PDF

18.3 KB Created: 2019-11-09 22:26:58 +00:00 Authoring application: mPDF 5.7
MD5: 1c8afd01a83be4e51f3310a34b20df66 SHA-1: 6d7f120bed31e76931010cb8e5dfc160fcb5ff40 SHA-256: 139d52d532350c78c062c4a3af9cb091e840c7f85a09829f3a249e33bc9e40ba
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. The heuristic 'PDF_SEO_LINK_FARM' indicates that these URLs are likely intended to manipulate search engine rankings or direct users to potentially malicious content. The ML classifier also flagged the document as malicious, supporting this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

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/4731737734732/The-Best-Loved-Poems-of-Jacqueline-Kennedy-Onassis-by-Caroline-Kennedy.pdf
    • http://cefasfese.4pu.com/7730732739734731/Uncommon-Grace-Reminiscences-and-Photographs-of-Jacqueline-Bouvier-Kennedy-Onassis-by-Jean-Claude-Suar-s.pdf
    • http://cefasfese.4pu.com/3735731733733732/A-Family-of-Poems-My-Favorite-Poetry-for-Children-by-Caroline-Kennedy.pdf
    • http://cefasfese.4pu.com/5737735738739732/Who-Was-Jacqueline-Kennedy-by-Bonnie-Bader.pdf
    • http://cefasfese.4pu.com/4732735731735739/The-Other-Mrs-Kennedy-An-intimate-and-revealing-look-at-the-hidden-life-of-Ethel-Skakel-Kennedy-by-Jerry-Oppenheimer.pdf
    • http://cefasfese.4pu.com/3738733735738738/Kick-Kennedy-The-Charmed-Life-and-Tragic-Death-of-the-Favorite-Kennedy-Daughter-by-Barbara-Leaming.pdf
    • http://cefasfese.4pu.com/7730732738739735/Jacqueline-Bouvier-Kennedy-by-Mary-Van-Rensselaer-Thayer.pdf
    • http://cefasfese.4pu.com/1730732739733731739/The-Kennedy-Wit-The-Humor-and-Wisdom-of-John-F-Kennedy-by-John-F-Kennedy.pdf
    • http://cefasfese.4pu.com/5737735738739734/The-Secret-Letters-of-Marilyn-Monroe-and-Jacqueline-Kennedy-by-Wendy-Leigh.pdf
    • http://cefasfese.4pu.com/1731739732734739/How-the-English-Establishment-Framed-Stephen-Ward-by-Caroline-Kennedy.pdf
    • http://cefasfese.4pu.com/7736735738730739/Simple-Decor-Extravagant-Living-The-Watson-Kennedy-A-to-Z-Guide-to-a-More-Beautiful-Life-by-Ted-Kennedy-Watson.pdf
    • http://cefasfese.4pu.com/1735734737739734/The-Greatest-Speeches-Of-President-John-F-Kennedy-by-John-F-Kennedy.pdf
    • http://cefasfese.4pu.com/4730737738735730/Our-Favourite-Poems-New-Zealanders-Choose-Their-Best-Loved-Poems-by-Iain-Sharp.pdf
    • http://cefasfese.4pu.com/4730739733734730/Leaving-Everything-Most-Loved-Maisie-Dobbs-10-by-Jacqueline-Winspear.pdf
    • http://cefasfese.4pu.com/1730739735731738733/The-Job-by-Douglas-Kennedy.pdf
    • http://cefasfese.4pu.com/1730733736730739/-morphi-by-C-Kennedy.pdf
    • http://cefasfese.4pu.com/2739730732731739/Safe-by-C-Kennedy.pdf
    • http://cefasfese.4pu.com/3733731735732736/Now-That-You-re-Back-by-A-L-Kennedy.pdf
    • http://cefasfese.4pu.com/4733733739733732/The-Divisions-by-L-A-Kennedy.pdf
    • http://cefasfese.4pu.com/1734730736733734/Paradise-by-A-L-Kennedy.pdf

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