Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1a4c82b545291d…

MALICIOUS

PDF

19.8 KB Created: 2019-05-07 09:11:12 +01:00 Authoring application: mPDF 5.7
MD5: 9ad42f62b0b9b104c5a20bc874a54284 SHA-1: 1858d4e81311d0f3aa9f75752615414ebc07f165 SHA-256: 4d1a4c82b545291dac86ab0f86e5b29ddac2c8496a2b95263b364829ce9eb4b9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, constituting a link farm. This heuristic, combined with the ML classifier's high confidence, suggests the document is designed to redirect users to external sites, likely for malicious purposes such as phishing or malware distribution. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/7da3da0da0da3/Double-Dare-Truth-Dare-Kiss-Promise-5-by-Cathy-Hopkins.pdf
    • http://seasasac.lflinkup.com/2da0da2da8da0da5/Dare-to-Desire-Dare-to-Love-2-by-Carly-Phillips.pdf
    • http://seasasac.lflinkup.com/3da2da1da7da4da9/Dare-to-Hold-Dare-to-Love-4-by-Carly-Phillips.pdf
    • http://seasasac.lflinkup.com/3da6da7da5da2da1/The-Last-Word-and-the-Word-After-That-A-Tale-of-Faith-Doubt-and-a-New-Kind-of-Christianity-by-Brian-D-McLaren.pdf
    • http://seasasac.lflinkup.com/7da8da4da6da3da2/One-Perfect-Word-One-Word-Can-Make-All-the-Difference-by-Debbie-Macomber.pdf
    • http://seasasac.lflinkup.com/4da9da2da7da9da7/Front-Word-Back-Word-Insight-Out-by-Smoky-Zeidel.pdf
    • http://seasasac.lflinkup.com/5da1da9da5/Word-by-Word-The-Secret-Life-of-Dictionaries-by-Kory-Stamper.pdf
    • http://seasasac.lflinkup.com/4da0da6da4da8/A-Knight-of-the-Word-Word-amp-Void-2-by-Terry-Brooks.pdf
    • http://seasasac.lflinkup.com/9da0da8da2da7da4/The-Everything-Giant-Book-of-Word-Searches-Over-300-puzzles-challenge-even-the-most-diehard-word-search-fans-Over-300-Puzzles-to-Challenge-Even-the-Most-Diehard-Word-Search-Fan-by-Charles-Timmerman.pdf
    • http://seasasac.lflinkup.com/1da1da1da4da9da1da0/Word-of-Promise-Word-of-Hope-Preaching-Helps-for-the-First-Readings-From-the-Hebrew-Scripture-for-Cycle-quot-B-quot-by-Paul-R-Frerking.pdf
    • http://seasasac.lflinkup.com/1da1da3da0da0da8da1/Word-Order-In-Ancient-Greek-A-Pragmatic-Account-Of-Word-Order-Variation-In-Herodotus-by-Helma-Dik.pdf
    • http://seasasac.lflinkup.com/4da9da5da5da9da1/Risk-Is-A-Four-Letter-Word-Four-Letter-Word-1-by-Erin-M-Leaf.pdf
    • http://seasasac.lflinkup.com/7da5da0da1da1/Truth-or-Dare-Truth-or-Dare-1-by-Jacqueline-Green.pdf
    • http://seasasac.lflinkup.com/2da9da2da8da6da2/Dare-to-Love-Dare-to-Love-1-by-Carly-Phillips.pdf
    • http://seasasac.lflinkup.com/3da5da3da5da0da1/Taken-by-Kim-Dare.pdf
    • http://seasasac.lflinkup.com/2da6da1da1da5da1/Temptation-by-Kim-Dare.pdf
    • http://seasasac.lflinkup.com/2da6da0da5da5da8/Anything-in-a-Skirt-G-A-Y-3-5-by-Kim-Dare.pdf
    • http://seasasac.lflinkup.com/2da6da0da3da3da8/Gay-Since-Today-G-A-Y-6-by-Kim-Dare.pdf
    • http://seasasac.lflinkup.com/2da3da5da8da2da1/Gay-Man-Seeks-Same-G-A-Y-8-by-Kim-Dare.pdf
    • http://seasasac.lflinkup.com/2da6da0da5da5da7/The-Gift-by-Kim-Dare.pdf

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