Malicious PDF — malware analysis report

Static analysis result for SHA-256 373c88a88eb52508…

MALICIOUS

PDF

19.9 KB Created: 2019-05-05 14:49:57 +01:00 Authoring application: mPDF 5.7
MD5: c4229de4677e357b188dc11204c6bebc SHA-1: b8cc0e76d172e49997dde0a5ec9f386f4883fb11 SHA-256: 373c88a88eb5250864f3de1e6c3e575a899ccd8a0e6906ac53fae95975ad710e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests a malicious intent, possibly for SEO spam or to redirect users to phishing or malware distribution sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://seasasac.lflinkup.com/3da4da6da4da1da2/Cannibal-Island-Golden-Disk-1-by-Cornell-DeVille.pdf
    • http://seasasac.lflinkup.com/2da1da2da6da8da3/Lost-in-the-Bayou-by-Cornell-DeVille.pdf
    • http://seasasac.lflinkup.com/5da1da8da6da8da2/Cannibal-Encounters-Europeans-and-Island-Caribs-1492-1763-by-Philip-P-Boucher.pdf
    • http://seasasac.lflinkup.com/1da1da7da8da3da1da3/Tsukiji-market-a-horror-cannibal-fiction-quot-Forced-to-be-Eaten-quot-series-3-by-Cannibal-Teller.pdf
    • http://seasasac.lflinkup.com/7da3da6da4da0da8/The-Selected-Works-of-Gabriel-Deville-by-Gabriel-Deville.pdf
    • http://seasasac.lflinkup.com/5da3da2da3da1da5/Troubled-Souls-from-Japanese-Noh-Plays-of-the-Fourth-Group-Kanawa-Semimaru-Kogo-Eboshi-Ori-Jinen-Koji-and-Kagekiyo-Cornell-East-Asia-No-95-Cornell-East-Asia-Series-by-Chifumi-Shimazaki.pdf
    • http://seasasac.lflinkup.com/4da4da3da7da3da2/Island-of-Hope-Island-of-Tears-The-Story-of-Those-Who-Entered-the-New-World-through-Ellis-Island-In-Their-Own-Words-by-David-M-Brownstone.pdf
    • http://seasasac.lflinkup.com/6da9da2da0da9da6/Adventures-in-3-D-Book-and-Disk-by-Douglas-E-Wolfgram.pdf
    • http://seasasac.lflinkup.com/1da0da8da9da2da1da5/Mastering-Oracle-7-and-Client-Server-Computing-with-Disk-by-Steven-M-Bobrowski.pdf
    • http://seasasac.lflinkup.com/7da1da9da2da6da3/Blood-Creek-Eulogy-The-Circle-the-Disk-and-the-Ring-by-John-Repa.pdf
    • http://seasasac.lflinkup.com/7da3da6da3da9da9/How-to-Kill-a-Man-by-Kristin-DeVille.pdf
    • http://seasasac.lflinkup.com/7da3da6da6da6da3/After-Dark-by-Storm-Deville.pdf
    • http://seasasac.lflinkup.com/7da3da6da3da8da9/Sympathy-for-the-Deville-by-Allan-Lunsford.pdf
    • http://seasasac.lflinkup.com/7da3da6da5da9da3/Blood-and-Kisses-by-Solange-Deville.pdf
    • http://seasasac.lflinkup.com/7da3da6da5da8da1/Rapides-Post-on-Red-River-by-DeVille.pdf
    • http://seasasac.lflinkup.com/7da3da6da6da6da6/The-Drummer-He-had-everything-he-ever-wanted-until-he-met-the-woman-he-could-never-have-by-Mandy-Deville.pdf
    • http://seasasac.lflinkup.com/7da3da6da3da8da1/The-Abduction-of-Rupert-Deville-by-Paul-White.pdf
    • http://seasasac.lflinkup.com/4da8da1da3da9da7/The-Cannibal-Within-by-Mark-Mirabello.pdf
    • http://seasasac.lflinkup.com/3da7da5da7da9da5/The-Cannibal-by-John-Hawkes.pdf
    • http://seasasac.lflinkup.com/2da1da5da5da0da0/The-Cannibal-Within-by-Mark-Mirabello.pdf

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