Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9f4275212489d6…

MALICIOUS

PDF

16.5 KB Created: 2019-05-03 20:11:04 +01:00 Authoring application: mPDF 5.7
MD5: 7a4193084e8e3b0bfd4a90c76dc3827b SHA-1: 299a018b334d53cb84174fdf9cd6d6ecd738d666 SHA-256: 3b9f4275212489d6ab5fd0149793c9686ceb212c04774c61187fc94b9f91123a
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a heuristic firing for a link farm, indicating an attempt to direct users to numerous external URLs. The document body confirms the presence of these embedded links, with the dominant host being 'cefasfese.4pu.com'. While the individual links are marked as benign, the sheer volume and the nature of the link farm suggest a malicious intent, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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/5735737733732732/Chips-Fragments-and-Vestiges-by-Gail-Hamilton.pdf
    • http://cefasfese.4pu.com/5730730738735731/Goodbye-Mr-Chips-by-James-Hilton.pdf
    • http://cefasfese.4pu.com/2736735734733735/Goodbye-Mr-Chips-by-James-Hilton.pdf
    • http://cefasfese.4pu.com/6734736731739739/Tulips-Chips-and-Mayonnaise-by-Dawn-Cairns.pdf
    • http://cefasfese.4pu.com/7731734738734738/Elizabeth-Gail-and-Double-Trouble-Elizabeth-Gail-Wind-Rider-Series-11-by-Hilda-Stahl.pdf
    • http://cefasfese.4pu.com/7730739738731739/Mrs-Alexander-Hamilton-Witness-That-George-Washington-Was-a-Communicant-of-the-Church-by-Elizabeth-Hamilton.pdf
    • http://cefasfese.4pu.com/4739730737734739/Charms-and-Chocolate-Chips-A-Magical-Bakery-Mystery-3-by-Bailey-Cates.pdf
    • http://cefasfese.4pu.com/5735737731733736/Vestiges-by-Pat-Dickinson.pdf
    • http://cefasfese.4pu.com/4732735733735732/Ghosts-Don-t-Eat-Potato-Chips-The-Adventures-of-the-Bailey-School-Kids-5-by-Debbie-Dadey.pdf
    • http://cefasfese.4pu.com/5735737732731736/Vestiges-of-a-Journey-by-Sabas-H-Whittaker.pdf
    • http://cefasfese.4pu.com/5735737732732739/Les-Vestiges-de-Jacinto-Gears-of-War-2-by-Karen-Traviss.pdf
    • http://cefasfese.4pu.com/5735737733731737/Vestiges-Tales-Told-by-Remnants-by-Namijo.pdf
    • http://cefasfese.4pu.com/5735737732737737/Ghost-on-a-Carousel-Vestiges-of-Love-by-Kay-Gute.pdf
    • http://cefasfese.4pu.com/5735737733731739/Vestiges-of-the-Gael-in-Gwynedd-by-William-Basil-Jones.pdf
    • http://cefasfese.4pu.com/5735737732737736/Vestiges-of-the-Natural-History-of-Creation-by-Henry-Morley.pdf
    • http://cefasfese.4pu.com/5735737732737739/Vestiges-of-Suffering-Collected-Poems-by-Chaska-Soul.pdf
    • http://cefasfese.4pu.com/5735737732738733/Vestiges-of-the-Natural-History-of-Creation-by-George-Barrell-Cheever.pdf
    • http://cefasfese.4pu.com/5735737732737731/Nippon-no-Haikyo---Vestiges-d-un-Japon-oubli-by-Jordy-Meow.pdf
    • http://cefasfese.4pu.com/5735737730739732/Vestiges-of-Grandeur-Plantations-of-Louisiana-s-River-Road-by-Richard-Sexton.pdf
    • http://cefasfese.4pu.com/5735737732738738/Vestiges-of-the-Broken-Plural-in-Hebrew-by-William-Henry-Salter-Brooks.pdf
    • http://cefasfese.4pu.com/4732735733735732/Ghosts-Don-t-Eat-Potato-Chips-The-Adventures-of-the-Bailey-School-Kids-5-by-Debbie-Dadey.p

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