Malicious PDF — malware analysis report

Static analysis result for SHA-256 676a59f5d0645f3b…

MALICIOUS

PDF

16.1 KB Created: 2019-06-04 11:00:07 +01:00 Authoring application: mPDF 5.7
MD5: b1f5cec1207f80f9e7d710e2b17d61cf SHA-1: 65475d4dc0ba39451ebf87c0bdeb4beb7da57fa2 SHA-256: 676a59f5d0645f3b3449357d8d943a1f53616230fcc7ca7c47377c12bfaad0cd
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm by the PDF_SEO_LINK_FARM heuristic. These URLs point to various book titles, suggesting a deceptive attempt to manipulate search engine results or redirect users to potentially malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/3732738739739735/Infernal-Devices-Infernal-Devices-1-by-K-W-Jeter.pdf
    • http://cefasfese.4pu.com/3731731733731/The-Infernal-Devices-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/4737738730738/After-the-Bridge-The-Infernal-Devices-3-1-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/4739733735739732/Clockwork-Prince-The-Infernal-Devices-2-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/4733732732735/Clockwork-Princess-The-Infernal-Devices-3-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/6732739736733/Clockwork-Angel-The-Infernal-Devices-1-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/2737737733733739/Clockwork-Angel-The-Infernal-Devices-Manga-1-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/3734730732739/Clockwork-Angel-Clockwork-Prince-Clockwork-Princess-The-Infernal-Devices-1-3-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/5735737737735/The-Infernal-Devices-Clockwork-Angel-Clockwork-Prince-Clockwork-Princess-by-Cassandra-Clare.pdf
    • http://cefasfese.4pu.com/3737737736730732/Infernal-Angel-City-Infernal-2-by-Edward-Lee.pdf
    • http://cefasfese.4pu.com/4731739730738735/Magnificent-Devices-Bundle-Volume-1-Magnificent-Devices-1-4-by-Shelley-Adina.pdf
    • http://cefasfese.4pu.com/2732739739730738/City-Infernal-City-Infernal-1-by-Edward-Lee.pdf
    • http://cefasfese.4pu.com/5730734732739/Infernal-Machines-by-Will-Millar.pdf
    • http://cefasfese.4pu.com/4732734734732731/Infernal-by-Mark-de-Jager.pdf
    • http://cefasfese.4pu.com/6739739737730735/Infernal-Desires-Queen-of-the-Damned-3-by-Kel-Carpenter.pdf
    • http://cefasfese.4pu.com/6732733736736735/Duval-and-the-Infernal-Machine-by-Michele-McGrath.pdf
    • http://cefasfese.4pu.com/3735738730733739/Infernal-Magic-Demons-of-Fire-and-Night-1-by-C-N-Crawford.pdf
    • http://cefasfese.4pu.com/3735738738732736/The-Infernal-Desire-Machines-of-Doctor-Hoffman-by-Angela-Carter.pdf
    • http://cefasfese.4pu.com/3738731730739733/Infernal-Father-of-Mine-Overworld-Chronicles-7-by-John-Corwin.pdf
    • http://cefasfese.4pu.com/1730737733733731734/The-Vision-of-Hell-Infernal-Journeys-in-Medieval-French-Literature-by-D-D-R-Owen.pdf

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