Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a44afeaa3a2c9c3…

MALICIOUS

PDF

15.2 KB Created: 2019-05-02 19:39:20 +01:00 Authoring application: mPDF 5.7
MD5: 8f6e2341e91ab384248e32bbba0796a2 SHA-1: f90fd041351c721346e3c6307ffb1a2ad25974e0 SHA-256: 8a44afeaa3a2c9c35a9dacb0543199ebb6cdafc9b24848fdff24c0fd33929237
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment

The PDF contains a large number of embedded URLs, each disguised as a book title, which is a common tactic for SEO poisoning or phishing lures. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body primarily consists of these links.

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://muicuiu.dumb1.com/8a03a00a06a00a07/Footprints-Under-the-Window-Hardy-Boys-12-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/4a01a03a00a01a06/Hardy-Boys-Boxed-Set-1-6-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/4a06a02a08a09a00/The-Demon-s-Den-Hardy-Boys-81-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/7a01a03a08a08a07/Sky-Sabotage-Hardy-Boys-79-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/8a03a00a06a06a05/The-Witchmaster-s-Key-Hardy-Boys-55-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/1a09a00a09a05a05/What-Happened-at-Midnight-Hardy-Boys-10-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/8a03a00a06a06a01/The-Bombay-Boomerang-Hardy-Boys-49-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/7a06a09a01a08a01/Track-of-the-Zombie-Hardy-Boys-71-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/7a04a00a05a05/The-Secret-of-the-Old-Mill-Hardy-Boys-3-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/1a09a06a01a09a09/The-Tower-Treasure-Hardy-Boys-1-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/1a07a05a05a04a01/The-House-on-the-Cliff-The-Hardy-Boys-2-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/8a03a00a06a09a08/The-Shattered-Helmet-Hardy-Boys-52-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/1a03a03a09a09a06/While-the-Clock-Ticked-Hardy-Boys-11-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/7a00a00a02a06/The-Twisted-Claw-Hardy-Boys-18-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/8a03a00a06a09a09/The-Jungle-Pyramid-Hardy-Boys-56-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/6a03a09a09a03/A-Figure-in-Hiding-Hardy-Boys-16-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/8a03a00a06a01a00/The-Clue-in-the-Embers-Hardy-Boys-35-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/3a06a01a04a05a03/The-Hooded-Hawk-Mystery-Hardy-Boys-34-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/6a02a06a00a07a09/The-Mystery-of-the-Spiral-Bridge-Hardy-Boys-45-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/3a07a06a07a00a03/The-Hardy-Boys-Handbook-Seven-Stories-of-Survival-by-Franklin-W-Dixon.pdf
    • http://muicuiu.dumb1.com/8a03a00a06a

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