Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b863285c7203eb3…

MALICIOUS

PDF

18.4 KB Created: 2019-11-07 23:32:00 +00:00 Authoring application: mPDF 5.7
MD5: 27000b00e8d1a520ae7ad0711877d2a0 SHA-1: 0ac6bd174479e56409b340dd26b1a0dc6da2efbd SHA-256: 8b863285c7203eb3f00a02aeef6d0a3d947f059516831c5db786b7e54bb616eb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, and the document body was unreadable. The primary attack pattern observed is the distribution of a link farm.

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/3737731734731736/THE-PROM-QUEEN-AND-THE-PADDLE-A-SPANKING-STORY-by-Sandra-Harris.pdf
    • http://cefasfese.4pu.com/1730735731735738731/Fat-Hoochie-Prom-Queen-by-Nico-Medina.pdf
    • http://cefasfese.4pu.com/1738730737730732/The-Prom-Queen-Fear-Street-15-by-R-L-Stine.pdf
    • http://cefasfese.4pu.com/3735731739735735/Memoirs-of-an-Ex-Prom-Queen-by-Alix-Kates-Shulman.pdf
    • http://cefasfese.4pu.com/4739738736736736/Tripping-the-Prom-Queen-The-Truth-about-Women-and-Rivalry-by-Susan-Shapiro-Barash.pdf
    • http://cefasfese.4pu.com/6736737732735730/Prom-Ever-After-Haute-Date-Save-the-Last-Dance-Prom-and-Circumstance-by-Barbara-Caridad-Ferrer.pdf
    • http://cefasfese.4pu.com/3731739736737732/Christian-Domestic-Discipline-Spanking-Romance-Short-Story-Collection-by-Leah-Kelley.pdf
    • http://cefasfese.4pu.com/2738730738734732/The-Chili-Queen-by-Sandra-Dallas.pdf
    • http://cefasfese.4pu.com/4731731738739730/The-Shadow-Queen-by-Sandra-Gulland.pdf
    • http://cefasfese.4pu.com/5730731735732732/The-Queen-Mother-The-Untold-Story-of-Elizabeth-Bowes-Lyon-Who-Became-Queen-Elizabeth-The-Queen-Mother-by-Lady-Colin-Campbell.pdf
    • http://cefasfese.4pu.com/2730731732736736/Rival-Ambassadors-at-the-Court-of-Queen-Mary-by-E-Harris-Harbison.pdf
    • http://cefasfese.4pu.com/1731734732733732736/Blushing-Cheeks-Volume-Two-A-Spanking-Story-Anthology-from-Blushing-Books-by-Melina-Barron.pdf
    • http://cefasfese.4pu.com/1733733737733738/Prom-Impossible-Prom-Impossible-1-by-Laura-Pauling.pdf
    • http://cefasfese.4pu.com/5738735737730733/The-Voyageurs-Paddle-by-Kathy-jo-Wargin.pdf
    • http://cefasfese.4pu.com/1730736739731735/Sarah-s-Story-by-Ruth-Elwin-Harris.pdf
    • http://cefasfese.4pu.com/1737738738733732/Let-Them-Paddle-Coming-of-Age-on-the-Water-by-Alan-S-Kesselheim.pdf
    • http://cefasfese.4pu.com/5739733733738736/The-Peace-Tree-from-Hiroshima-The-Little-Bonsai-with-a-Big-Story-by-Sandra-Moore.pdf
    • http://cefasfese.4pu.com/1730730735736/Five-Came-Back-A-Story-of-Hollywood-and-the-Second-World-War-by-Mark-Harris.pdf
    • http://cefasfese.4pu.com/4734738739739733/Pompeii-Awakened-A-Story-of-Rediscovery-by-Judith-Harris.pdf
    • http://cefasfese.4pu.com/2732733731736737/The-Second-Story-Magic-Misfits-2-by-Neil-Patrick-Harris.pdf
    • http://cefasfese.4pu.com/3731739736737732/Christian-Domestic-Discipline-Spanking-Roma

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