Malicious PDF — malware analysis report

Static analysis result for SHA-256 5047cd801db9c4d1…

MALICIOUS

PDF

21.5 KB Created: 2019-05-01 12:03:39 +01:00 Authoring application: mPDF 5.7
MD5: 1031cf8ea583587c1e024ef908b01fc5 SHA-1: 6f9a8c38183391513a3104cf79f73e8c846c6b1b SHA-256: 5047cd801db9c4d112dd12f739d40a2d341b2a428370cf10fff895d3acf919ef
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, all hosted on the domain 'cefasfese.4pu.com'. This pattern is indicative of SEO poisoning or a link farm designed to drive traffic to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

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://cefasfese.4pu.com/6733733732737737/Twice-Told-True-Tales-of-the-Blue-Ridge-amp-Great-Smokies-by-Mead-Parce.pdf
    • http://cefasfese.4pu.com/1738738732733735/Blue-Ridge-Sunrise-Blue-Ridge-1-by-Denise-Hunter.pdf
    • http://cefasfese.4pu.com/8736736732739737/3000-Miles-in-the-Great-Smokies-by-William-A-Hart-Jr-.pdf
    • http://cefasfese.4pu.com/9739732732738731/Hiking-Trails-of-the-Smokies-by-Great-Source-Ed-Group-Staff.pdf
    • http://cefasfese.4pu.com/1738735734732739/Panic-Rising-True-Life-Survivor-Tales-from-the-Great-Outdoors-by-Brett-Nunn.pdf
    • http://cefasfese.4pu.com/5736734730738733/Murder-Along-the-Blue-Ridge-by-Sabena-Stone.pdf
    • http://cefasfese.4pu.com/1730735731735730/Sweetbriar-Cottage-Blue-Ridge-0-by-Denise-Hunter.pdf
    • http://cefasfese.4pu.com/3739733738738739/Restless-Hearts-Brides-of-the-Blue-Ridge-2-by-Barbara-Westbrook.pdf
    • http://cefasfese.4pu.com/5738734738738738/True-Blue-SEALS-Zak-True-Blue-SEALs-1-by-Sharon-Hamilton.pdf
    • http://cefasfese.4pu.com/3737735738738738/A-Murder-for-the-Books-Blue-Ridge-Library-Mysteries-1-by-Victoria-Gilbert.pdf
    • http://cefasfese.4pu.com/3733737739737730/Shelved-Under-Murder-Blue-Ridge-Library-Mysteries-2-by-Victoria-Gilbert.pdf
    • http://cefasfese.4pu.com/5735737733731737/Vestiges-Tales-Told-by-Remnants-by-Namijo.pdf
    • http://cefasfese.4pu.com/1730731736734735732/Tales-Told-By-a-Machine-by-Gianni-Rodari.pdf
    • http://cefasfese.4pu.com/2730738736734731/The-Rocky-Ridge-Collection-Little-House-on-Rocky-Ridge-Little-Farm-in-the-Ozarks-in-the-Land-of-the-Big-Red-Apple-on-the-Other-Side-of-the-Hill-Little-House-The-Rocky-Ridge-Years-1-4-by-Roger-Lea-MacBride.pdf
    • http://cefasfese.4pu.com/1730737739738730734/Tales-Told-in-Oz-The-Wicked-Years-0-5-by-Gregory-Maguire.pdf
    • http://cefasfese.4pu.com/9737737733737/Near-Death-Experiences-True-stories-of-Near-Death-Experiences-told-by-real-people-True-stories-of-those-who-went-to-Heaven-by-Tessy-Rawlins.pdf
    • http://cefasfese.4pu.com/9731735739738/Her-Stories-African-American-Folktales-Fairy-Tales-and-True-Tales-by-Virginia-Hamilton.pdf
    • http://cefasfese.4pu.com/1730731730735737736/Beyond-the-Walls-of-the-Forgotten-Land-Albanian-Mythological-Tales-as-told-by-my-Grandmother-by-Shqipe-Malushi.pdf
    • http://cefasfese.4pu.com/1739731733736733/The-Riddle-Of-Babi-Yar-The-True-Story-Told-by-a-Survivor-of-the-Mass-Murders-in-Kiev-1941-1943-by-Ziama-Trubakov.pdf
    • http://cefasfese.4pu.com/2733735738738739/Chinese-fairy-tales-Forty-Stories-Told-by-Almond-Eyed-Folk-by-Adele-Marion-Fielde.pdf