Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2095b439fb35b68…

MALICIOUS

PDF

16.2 KB Created: 2019-04-30 17:46:39 +01:00 Authoring application: mPDF 5.7
MD5: 684854f97f758549512be56e55371c83 SHA-1: 14d93f4f978afe206c7efc196960c53412ece849 SHA-256: c2095b439fb35b68667e66e89d598f514602b245fc47f5b52a34f37c04cabdc2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. The heuristic PDF_SEO_LINK_FARM indicates that this is a technique to artificially inflate search engine rankings or distribute malicious content. While the specific intent beyond linking is unclear due to the lack of executable scripts, the sheer volume of links suggests a malicious distribution or SEO manipulation attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/5da9da2da8da8da6/1-411-QI-Facts-To-Knock-You-Sideways-by-John-Lloyd.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da5da1/Knock-Knock-Jokes-for-Kids-301-Hilarious-and-Funny-Knock-Knock-Jokes-by-Lizzy-Burbank.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da0da5/Knock-Knock-Knock-and-Other-Stories-by-Ivan-Turgenev.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da9da1/Knock-Knock-What-I-Love-About-Mom-Fill-in-the-Love-Journal-by-Knock-Knock.pdf
    • http://seasasac.lflinkup.com/3da7da6da6da4da8/Knock-Knock-It-s-the-Devil-Trinity-1-by-Alexander-Hernandez.pdf
    • http://seasasac.lflinkup.com/5da9da2da7da2da9/100-Knock-Knock-Jokes-for-Kids-by-Johnny-B-Laughing.pdf
    • http://seasasac.lflinkup.com/1da3da0da0da7da7/Knock-Knock-Psychic-Visions-5-by-Dale-Mayer.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da4da2/Simon-Says-Knock-Knock-Man-1-by-Adam-Dark.pdf
    • http://seasasac.lflinkup.com/5da9da2da7da3da2/Knock-Knock-Jokes-for-Kids-by-Rob-Elliott.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da0da9/Knock-Knock-You-re-Dead-by-Diane-M-Dickson.pdf
    • http://seasasac.lflinkup.com/5da9da2da7da3da0/Knock-Knock-Who-s-There-by-James-Hadley-Chase.pdf
    • http://seasasac.lflinkup.com/1da3da0da0da8da2/Knock-Three-Times-by-Marion-St-John-Webb.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da7da7/Inconsequential-Dilemmas-by-Knock-Knock.pdf
    • http://seasasac.lflinkup.com/5da9da2da7da5da9/Knock-Knock-by-Tammi-Sauer.pdf
    • http://seasasac.lflinkup.com/5da9da2da8da4da8/Knock-Knock-by-Jules-Feiffer.pdf
    • http://seasasac.lflinkup.com/7da3da8da3da9da3/101-Knock-Knock-Jokes-for-Kids-Joke-Books-for-Kids-vol-1-by-IP-Factly.pdf
    • http://seasasac.lflinkup.com/9da7da9da7da1/Knock-Knock-by-S-P-Miskowski.pdf
    • http://seasasac.lflinkup.com/3da6da4da5da1da4/QI-The-Book-of-Animal-Ignorance-by-John-Lloyd.pdf
    • http://seasasac.lflinkup.com/4da1da5da7da7/The-Book-of-General-Ignorance-by-John-Lloyd.pdf
    • http://seasasac.lflinkup.com/7da7da0da1da2da8/Colorless-Tsukuru-Tazaki-and-His-Years-of-Pilgrimage---101-Book-Facts-1-Fun-Facts-amp-Trivia-Tidbits-by-G-Whiz.pdf

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