Malicious PDF — malware analysis report

Static analysis result for SHA-256 72689b9dde1012e1…

MALICIOUS

PDF

13.0 KB Created: 2019-11-09 22:05:53 +00:00 Authoring application: mPDF 5.7
MD5: a500ff8c08637d18d93106bdecdc5a16 SHA-1: 4402732cf95e19153e57f4d01dace5ee8ce381e8 SHA-256: 72689b9dde1012e10641ac75c6f890a0db37eea756c7a3a5eeb87988ec9930ce
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. While the ML classifier flagged it as malicious, the specific intent beyond link farming is unclear due to the lack of executable scripts. The primary attack pattern observed is the mass distribution of links, potentially as a lure or for SEO poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8460

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/4731738731734738/Permanently-Legless-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/1739736732732734/Waking-the-Merrow-Merrow-Trilogy-1-by-Heather-Rigney.pdf
    • http://cefasfese.4pu.com/4737735736733737/Reach-for-the-Sky-The-Story-of-Douglas-Bader-Legless-Ace-of-the-Battle-of-Britian-by-Paul-Brickhill.pdf
    • http://cefasfese.4pu.com/2735737730/Always-Hungry-Conquer-Cravings-Retrain-Your-Fat-Cells-and-Lose-Weight-Permanently-by-David-Ludwig.pdf
    • http://cefasfese.4pu.com/8731733738731730/Always-Delicious-Over-175-Satisfying-Recipes-to-Conquer-Cravings-Retrain-Your-Fat-Cells-and-Keep-the-Weight-Off-Permanently-by-David-Ludwig.pdf
    • http://cefasfese.4pu.com/3734730736737738/Stroke-to-His-Cox-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/3733733733730732/Muscling-Through-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/4731730739739738/Epiphany-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/3733733732739735/It-s-All-Geek-to-Me-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/3732732737736734/Tortoise-Interruptus-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/2737737739731736/Midnight-in-Berlin-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/1731733730733735/Merrow-by-Ananda-Braxton-Smith.pdf
    • http://cefasfese.4pu.com/3735733737737730/A-Blast-from-the-Past-Lars-and-Rael-2-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/1737731732733733/Pressure-Head-The-Plumber-s-Mate-1-by-J-L-Merrow.pdf
    • http://cefasfese.4pu.com/6738731738733734/Pat-the-Daddy-A-Parody-by-Kate-Merrow-Nelligan.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.