Malicious PDF — malware analysis report

Static analysis result for SHA-256 5524b84844e8d573…

MALICIOUS

PDF

19.0 KB Created: 2019-04-30 03:39:23 +01:00 Authoring application: mPDF 5.7
MD5: 79bf789c8bce38032baf30020e6c7e9a SHA-1: 92d06ea547221bc678cc7284418286d059661dc2 SHA-256: 5524b84844e8d57362d11c83847a2a07399d1b54fe6c9beb9d7b81bdced4370c
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file was identified as malicious due to a critical heuristic firing for a PDF SEO link farm. This indicates the document's primary purpose is to host a large number of external links, likely to distribute malicious content or manipulate search engine results. While the document body is unreadable, the presence of numerous links to external PDFs, such as http://xiixmcuin.linkpc.net/8205203201204202/Speak-Up-2-Tapes-by-Cheryl-Pavlik.pdf, strongly suggests a link distribution or redirection scheme.

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://xiixmcuin.linkpc.net/8205203201204202/Speak-Up-2-Tapes-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203201208200/Interactions-1-Writing-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203200208206/Grammar-Sense-2-Teacher-s-Book-with-Test-CD-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205202209205200/Read-Smart-Level-3-Student-Book-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203200209207/Grammar-Sense-2-Student-Book-and-Audio-CD-Pack-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203200208208/Grammar-Sense-1a-Student-Book-with-Online-Practice-Access-Code-Card-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203201202205/Grammar-Sense-1b-Student-Book-with-Online-Practice-Access-Code-Card-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203200209206/Interactions-Level-1-Writing-Student-Book-plus-E-Course-Code-Package-Sentence-Development-and-Introduction-to-the-Paragraph-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203201203207/Interactions-Mosaic-Silver-Edition---Interactions-2-Low-Intermediate-to-Intermediate---Writing-Student-e-Course-Key-Code-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8205203200202205/Interactions-Mosaic-Silver-Edition---Interactions-2-Low-Intermediate-to-Intermediate---Writing-Student-Book-by-Cheryl-Pavlik.pdf
    • http://xiixmcuin.linkpc.net/8201200201203200/Speak-Truthfully-Speak-Your-Way-to-an-Authentic-Life-with-Awareness-Courage-and-Confidence-by-Robert-Rabbin.pdf
    • http://xiixmcuin.linkpc.net/4203208202202209/Speak-English-Like-an-American-You-Already-Speak-English---Now-Speak-It-Even-Better-by-Amy-Gillett.pdf
    • http://xiixmcuin.linkpc.net/4205206206202200/Speak-Low-Speak-Easy-2-by-Melanie-Harlow.pdf
    • http://xiixmcuin.linkpc.net/7208200202203/Cheryl-My-Story-by-Cheryl-Cole.pdf
    • http://xiixmcuin.linkpc.net/3208207209204207/The-Questor-Tapes-by-D-C-Fontana.pdf
    • http://xiixmcuin.linkpc.net/4206201200202206/The-Mayakovsky-Tapes-by-Robert-Littell.pdf
    • http://xiixmcuin.linkpc.net/3204203202205208/The-Camelot-Tapes-by-William-G-Tolliver.pdf
    • http://xiixmcuin.linkpc.net/8205202209204209/Pavlik-by-Alex-D-.pdf
    • http://xiixmcuin.linkpc.net/1200202208203202203/The-Nixon-Tapes-1973-by-Douglas-Brinkley.pdf
    • http://xiixmcuin.linkpc.net/6208202200202207/The-Fountainhead-Part-2-Tapes-14-24-of-24-tape-set-by-Ayn-Rand.pdf
    • http://xiixmcuin.linkpc.net/8205203200209206/Interactions-Level-1-Writing-Student-Book-plus-E-Co