Malicious PDF — malware analysis report

Static analysis result for SHA-256 7137da4a574c4d8b…

MALICIOUS

PDF

24.2 KB Created: 2020-02-13 18:29:04 +00:00 Authoring application: mPDF 5.7
MD5: 27d31ce980f85459c5478a890933d00b SHA-1: 72e026910bd6f4972741a7844c6c6891f2dd12e3 SHA-256: 7137da4a574c4d8bb2d71a55c2c3e90cff8e49865e886fae9d12073c2035bd45
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9773

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://zacdsa.linkpc.net/4c58c59c52c52/The-Penguin-Book-of-Ghosts-Prepare-to-be-haunted-by-England-s-most-unforgettable-ghosts-by-Jennifer-Westwood.pdf
    • http://zacdsa.linkpc.net/1c58c57c54c51c56/The-Downside-Ghosts-Unholy-Ghosts-Unholy-Magic-City-of-Ghosts-Downside-Ghosts-1-3-by-Stacia-Kane.pdf
    • http://zacdsa.linkpc.net/1c52c53c52c59c56/An-Emergence-Of-Ghosts-Seven-Ghosts---The-BirdOfPrey-Chronicles-2-by-Brian-T-L-Strauss.pdf
    • http://zacdsa.linkpc.net/1c53c54c53c54c58/Ghosts-of-Christmas-Past-Haunted-Holidays-1-by-Jessica-Aspen.pdf
    • http://zacdsa.linkpc.net/4c57c52c50c54c56/Unholy-Ghosts-Downside-Ghosts-1-by-Stacia-Kane.pdf
    • http://zacdsa.linkpc.net/4c54c56c52c52c52/City-of-Ghosts-Downside-Ghosts-3-by-Stacia-Kane.pdf
    • http://zacdsa.linkpc.net/4c58c53c54c56c53/Unholy-Ghosts-Downside-Ghosts-1-by-Stacia-Kane.pdf
    • http://zacdsa.linkpc.net/8c59c57c51c57/Haunted-London-English-Ghosts-Legends-and-Lore-by-E-Ashley-Rooney.pdf
    • http://zacdsa.linkpc.net/1c59c54c54c53c55/The-Haunted-History-of-New-Orleans-Ghosts-of-the-French-Quarter-by-James-Caskey.pdf
    • http://zacdsa.linkpc.net/6c51c56c54c59c59/Grim-Grinning-Ghosts-Tales-from-the-Haunted-Mansion-3-by-Amicus-Arcane.pdf
    • http://zacdsa.linkpc.net/1c55c56c55c54c59/Child-of-the-Ghosts-Ghosts-1-by-Jonathan-Moeller.pdf
    • http://zacdsa.linkpc.net/6c52c58c58c58c51/Apparitions-Or-The-Mystery-of-Ghosts-Hobgoblins-and-Haunted-Houses-Developed-by-Joseph-Taylor.pdf
    • http://zacdsa.linkpc.net/6c52c58c59c52c54/Ghosts-of-Gettysburg-V-Spirits-Apparitions-and-Haunted-Places-of-the-Battlefield-by-Mark-Nesbitt.pdf
    • http://zacdsa.linkpc.net/5c50c59c54c59c57/Haunted-Hamilton-The-Ghosts-of-Dundurn-Castle-and-Other-Steeltown-Shivers-by-Mark-Leslie.pdf
    • http://zacdsa.linkpc.net/6c52c58c59c53c54/Ghosts-of-Gettysburg-VI-Spirits-Apparitions-and-Haunted-Places-on-the-Battlefield-by-Mark-Nesbitt.pdf
    • http://zacdsa.linkpc.net/6c52c58c58c52c57/Ghosts-of-Gettysburg-III-Spirits-Apparitions-and-Haunted-Places-of-the-Battlefield-by-Mark-Nesbitt.pdf
    • http://zacdsa.linkpc.net/4c54c50c50c53c56/Ghosts-of-Gettysburg-III-Spirits-Apparitions-and-Haunted-Places-on-the-Battlefield-by-Mark-Nesbitt.pdf
    • http://zacdsa.linkpc.net/6c52c58c58c53c52/More-Ghosts-of-Gettysburg-Spirits-Apparitions-and-Haunted-Places-of-the-Battlefield-by-Mark-Nesbitt.pdf
    • http://zacdsa.linkpc.net/8c57c52c58c56/Supernatural-England-Poltergeists---Ghosts---Hauntings-by-Betty-Puttick.pdf
    • http://zacdsa.linkpc.net/4c52c51c51c58c52/Haunted-Las-Vegas-Famous-Phantoms-Creepy-Casinos-and-Gambling-Ghosts-by-Paul-W-Papa.pdf

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