Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c1d1702b0b24f0…

MALICIOUS

PDF

16.6 KB Created: 2019-05-02 05:10:27 +01:00 Authoring application: mPDF 5.7
MD5: 2b1252521bcf8fdcc58e780918295e0c SHA-1: 3f879a6cc799f4d7ff2dc32f83d130ade5b4b88d SHA-256: f5c1d1702b0b24f0e271703a919dc979d6c0d27af67255e90d388503202b3ecf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external documents, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9810

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/5737733733735737/Genius-The-Revolution-by-Leopoldo-Gout.pdf
    • http://cefasfese.4pu.com/5730738739733734/Radio-Radio-Poems-by-Ben-Doyle.pdf
    • http://cefasfese.4pu.com/5730734738730735/A-la-caza-del-Hombre-Esquivo-by-Leopoldo-Montero.pdf
    • http://cefasfese.4pu.com/6738733738730731/Le-go-t-des-soba-en-plein-t-by-Vanessa-Iloste.pdf
    • http://cefasfese.4pu.com/6731734739731731/Tomates-les-vari-t-s-qui-ont-du-go-t-et-comment-les-cultiver-by-Jean-Michel-Groult.pdf
    • http://cefasfese.4pu.com/8733738733730733/Un-traitre-id-al-Un-traitre-notre-gout-French-version-of-Our-Kind-of-Traitor-by-John-le-Carr-.pdf
    • http://cefasfese.4pu.com/1731738732730732735/Izzy-Spector---Ghost-Detector-The-Ghost-Dog-of-Hill-Road-by-Robert-Spielman.pdf
    • http://cefasfese.4pu.com/3737735730737732/Ghost-a-la-Mode-A-Ghost-of-Granny-Apples-Mystery-1-by-Sue-Ann-Jaffarian.pdf
    • http://cefasfese.4pu.com/3736730737737738/Ghost-of-a-Threat-Betty-Boo-Ghost-Hunter-1-by-Beth-Dolgner.pdf
    • http://cefasfese.4pu.com/7735731733735/Ghost-Layer-Ghost-Seer-2-by-Robin-D-Owens.pdf
    • http://cefasfese.4pu.com/3731736739732/The-Ghost-Drum-Ghost-World-1-by-Susan-Price.pdf
    • http://cefasfese.4pu.com/9734738736732738/Ghost-Coast-Ghost-in-the-Shell-11-by-Masamune-Shirow.pdf
    • http://cefasfese.4pu.com/2734730730737736/Ghost-in-the-Cowl-Ghost-Exile-1-by-Jonathan-Moeller.pdf
    • http://cefasfese.4pu.com/3735733737736737/Giving-Up-the-Ghost-Laying-a-Ghost-2-by-Jane-Davitt.pdf
    • http://cefasfese.4pu.com/2734730730736739/Ghost-in-the-Flames-Ghost-2-by-Jonathan-Moeller.pdf
    • http://cefasfese.4pu.com/2730733734734739/Radio-Nowhere-by-Douglas-Smith.pdf
    • http://cefasfese.4pu.com/1730737735732736730/Angel-Radio-by-A-M-Blaushild.pdf
    • http://cefasfese.4pu.com/8734731735734730/French-Taste-in-Atlantic-Canada-1604-1758-A-Gastronomic-History-Le-go-t-fran-ais-au-Canada-atlantique-1604-1758-une-histoire-gastronomique-by-Anne-Marie-Lane-Jonah.pdf
    • http://cefasfese.4pu.com/3730730730731735/WLT-A-Radio-Romance-by-Garrison-Keillor.pdf
    • http://cefasfese.4pu.com/3738735731735737/Ryan-on-the-Radio-by-Paul-Russell.pdf
    • http://cefasfese.4pu.com/3731736739732/Th

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