Malicious PDF — malware analysis report

Static analysis result for SHA-256 720cc39025acd4ae…

MALICIOUS

PDF

17.3 KB Created: 2019-05-02 01:28:46 +01:00 Authoring application: mPDF 5.7
MD5: 9fb3454725673aed87f4eecd366a14ee SHA-1: 573a33bdb1e53b5d2763b52775122e558bf6d465 SHA-256: 720cc39025acd4ae08b7fcd6ffb160620dd9b019b7f6d4d8e1beab0af97ecf8c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, but the embedded URLs suggest a phishing or content-distribution attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://loaminoo.linkpc.net/5096097096098097/Nathaniel-Hawthorne-s-The-Scarlet-Letter-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/1090094091097097096/The-Scarlet-Letter-with-eBook-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/8095092098098096/THE-SCARLET-LETTER-Illustrated-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/6094093090096093/The-Scarlet-Letter-and-the-Blithedale-Romance-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/1099090095096093/The-Scarlet-Letter-amp-the-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/1091090095093094091/The-Scarlet-Letter-with-Additional-Material-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/9095099090095098/The-Scarlet-Letter-and-Related-Readings-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/8092097091093098/The-Scarlet-Letter---Full-Version-Annotated-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/8093098091097096/The-Scarlet-Letter-Audio-Book-Series---6-CD-Set-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/7095096090098097/The-Scarlet-Letter-Annotated-with-Study-Helps-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/7091095095090090/The-Scarlet-Letter-Bridge-Bilingual-Classics-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/7097090099092099/The-Scarlet-Letter-illustrated-Deluxe-Edition-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/5094090099096090/The-Scarlet-Letter-Golden-Illustrated-Classics-Comes-with-a-Free-Audiobook-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/7095091094097093/The-Scarlet-Letter-Centaurs-Classics-The-100-greatest-novels-of-all-time---39-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/5097094091090091/The-Scarlet-Letter---Original-February-1850-Uncensored-Version-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/8095098091090092/The-Scarlet-Letter-A-Romance-Burt-s-Library-of-the-World-s-Best-Books-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/3098096090095094/The-Selected-Short-Stories-of-Nathaniel-Hawthorne-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/9091093091096095/The-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/5093099092099090/The-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://loaminoo.linkpc.net/6099092097096097/The-Ancestral-Footstep-by-Nathaniel-Hawthorne.pdf

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