Malicious PDF — malware analysis report

Static analysis result for SHA-256 81905757e55214b0…

MALICIOUS

PDF

15.9 KB Created: 2020-02-13 18:23:51 +00:00 Authoring application: mPDF 5.7
MD5: d8b9d9f887f8545fbc5af0aebee7edf3 SHA-1: 6b0c72be382c31cd89416e0af672984d771e4845 SHA-256: 81905757e55214b048ea3fc73eb2f7b3687bb123fa132cb39251c9bfa212d8af
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links, identified as a PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The embedded links likely serve to direct users to malicious content or for SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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://lwoscmobook.myhome.cx/352405245524952465243/Another-day-another-11-247-63-by-Jeff-Millar.pdf
    • http://lwoscmobook.myhome.cx/952455248524852425246/The-Book-Of-Lost-Places-The-Selected-Works-Of-Jeff-Wander-Meer-by-Jeff-VanderMeer.pdf
    • http://lwoscmobook.myhome.cx/25244524152465245/Chrononauts-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/45241524652485249/Superman-Red-Son-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/15247524552435240/The-Fiend-by-Margaret-Millar.pdf
    • http://lwoscmobook.myhome.cx/352485246524552445244/The-Playdate-by-Louise-Millar.pdf
    • http://lwoscmobook.myhome.cx/55245524452435246/Sunset-Boulevard-Murders-A-Jeff-Kelly-Mystery-Jeff-Kelly-Detective-Mysteries-Book-1-by-William-Hare.pdf
    • http://lwoscmobook.myhome.cx/352405246524952415244/Jupiter-s-Legacy-Vol-1-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/1524052405242524652445245/Chrononauts---Die-Zeitreisenden-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/1524052445248524652455245/Black-Madonna-by-Peter-Millar.pdf
    • http://lwoscmobook.myhome.cx/152495241524652425245/Suzy-Led-Zeppelin-and-Me-by-Martin-Millar.pdf
    • http://lwoscmobook.myhome.cx/152455248524852495245/Blue-Rust-by-Joseph-Millar.pdf
    • http://lwoscmobook.myhome.cx/152455245524452405246/Wolverine-Old-Man-Logan-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/252465244524052475240/City-of-Strangers-by-Louise-Millar.pdf
    • http://lwoscmobook.myhome.cx/952405247524452465240/Die-Elfen-von-New-York-by-Martin-Millar.pdf
    • http://lwoscmobook.myhome.cx/15246524652465248/Beast-In-View-by-Margaret-Millar.pdf
    • http://lwoscmobook.myhome.cx/452455241524752415247/An-Air-That-Kills-Do-Evil-in-Return-by-Margaret-Millar.pdf
    • http://lwoscmobook.myhome.cx/852425243524052425247/The-Ultimates---S-curit-int-rieure-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/752435240524052495245/Kingsman-The-Secret-Service-by-Mark-Millar.pdf
    • http://lwoscmobook.myhome.cx/252445241524752495241/The-Ultimates-2-Ultimate-Collection-by-Mark-Millar.pdf
    • http://lwoscmobook

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