Malicious PDF — malware analysis report

Static analysis result for SHA-256 174f7a999555ba44…

MALICIOUS

PDF

15.4 KB Created: 2019-05-02 06:06:42 +01:00 Authoring application: mPDF 5.7
MD5: 44d711af5625feaff6e2e80a49153acc SHA-1: 8e0830d21487fdaec9152748cd48ae06989e9153 SHA-256: 174f7a999555ba445e8d38587af73d19208040d0fa436b96095deb503c77ebaf
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious. The embedded URLs are the primary IOCs, suggesting a spearphishing attachment delivery method.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/3736737737739736/All-Over-the-Place-by-Serena-Clarke.pdf
    • http://cefasfese.4pu.com/3735731730739735/Dwelling-Place-A-Plantation-Epic-by-Erskine-Clarke.pdf
    • http://cefasfese.4pu.com/3737735737731730/Pink-Place-A-Lyrical-Journey-to-the-Safe-Place-and-Inner-Drive-Deep-Inside-Every-Child-by-Deb-Simpson.pdf
    • http://cefasfese.4pu.com/2738736733734735/Serena-by-Ron-Rash.pdf
    • http://cefasfese.4pu.com/1731732732731730730/One-Place-in-Time-A-SPECIAL-PLACE-IN-A-SPLENDID-TIME-the-story-of-the-A-amp-R-Marshall-Shipyard-by-Ginger-Marshall-Martus.pdf
    • http://cefasfese.4pu.com/8732737737739730/Scheherazade-by-Serena-Mint.pdf
    • http://cefasfese.4pu.com/5732738735736739/On-the-Line-by-Serena-Williams.pdf
    • http://cefasfese.4pu.com/5732738735737739/Serena-by-Mollie-Chappell.pdf
    • http://cefasfese.4pu.com/5732733735734730/The-Temp-by-Serena-Mackesy.pdf
    • http://cefasfese.4pu.com/2733732736731735/Serena-s-Fall-by-M-K-Smith.pdf
    • http://cefasfese.4pu.com/7737738734735734/The-Geisha-by-Serena-Stone.pdf
    • http://cefasfese.4pu.com/6736734733738736/Where-The-Bulbul-Sings-by-Serena-Fairfax.pdf
    • http://cefasfese.4pu.com/1737730730730733/Awakening-A-Dangerous-Man-1-by-Serena-Grey.pdf
    • http://cefasfese.4pu.com/1737730732737736/Claim-A-Dangerous-Man-3-by-Serena-Grey.pdf
    • http://cefasfese.4pu.com/2737731734731738/Dark-Diamonds-by-Serena-Zane.pdf
    • http://cefasfese.4pu.com/7730730739731731/Bondage-is-the-Game-by-Serena-Devant.pdf
    • http://cefasfese.4pu.com/5732738735733734/The-Little-Princess-Serena-by-Melinda-Smart.pdf
    • http://cefasfese.4pu.com/5732738735738730/Consciousness-is-a-Catfish-by-Serena-Toxicat.pdf
    • http://cefasfese.4pu.com/4736737739731734/To-Find-and-to-Keep-Keeping-You-1-by-Serena-Yates.pdf
    • http://cefasfese.4pu.com/6731732735739730/Pushkin-s-Button-by-Serena-Vitale.pdf

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