Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d040da2e14a381…

MALICIOUS

PDF

16.5 KB Created: 2019-04-30 04:01:16 +01:00 Authoring application: mPDF 5.7
MD5: 73f257bc7505d55c1f4af7d8f8de1e31 SHA-1: 73247aedeb8e99e9094216beae19b24424b55053 SHA-256: 38d040da2e14a3812313e100a1e28d5014804136a4af2c57522a1fba36e3808d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the document body is heavily corrupted, the presence of numerous links suggests an attempt to direct users to external content, potentially for SEO manipulation or to host malicious payloads. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://muicuiu.dumb1.com/8a06a08a00a00/Polity-Agent-Agent-Cormac-4-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/8a07a01a03a09/The-Line-Of-Polity-Agent-Cormac-2-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/4a02a05a02a03a02/Gridlinked-Agent-Cormac-1-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/8a04a07a07a02a00/Line-War-Agent-Cormac-5-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/5a08a04a08a09a02/Shadow-of-the-Scorpion-Polity-Universe-2-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/4a02a05a01a04a08/Agent-Garbo-The-Brilliant-Eccentric-Secret-Agent-Who-Tricked-Hitler-and-Saved-D-Day-by-Stephan-Talty.pdf
    • http://muicuiu.dumb1.com/4a08a02a08a00/Agent-Zigzag-The-True-Wartime-Story-of-Eddie-Chapman-The-Most-Notorious-Double-Agent-of-World-War-II-by-Ben-Macintyre.pdf
    • http://muicuiu.dumb1.com/3a06a07a04/The-Temporary-Agent-The-Agent-1-by-Daniel-Judson.pdf
    • http://muicuiu.dumb1.com/5a01a04a01a00/Agent-21-Agent-21-1-by-Chris-Ryan.pdf
    • http://muicuiu.dumb1.com/6a08a09a03a09a08/Chevalier-d-Eon-agent-secret-du-Roi-tome-1---Le-masque-Chevalier-d-Eon-agent-secret-du-Roi-by-Silvestre.pdf
    • http://muicuiu.dumb1.com/4a00a09a08a01/The-Skinner-Spatterjay-1-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/1a08a06a05a00a03/The-Departure-Owner-Trilogy-1-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/3a02a06a07a09a02/The-Soldier-Rise-of-the-Jain-1-by-Neal-Asher.pdf
    • http://muicuiu.dumb1.com/2a07a05a04a09a06/Agent-6-by-Tom-Rob-Smith.pdf
    • http://muicuiu.dumb1.com/4a02a09a04a00a05/Agent-Orange-by-A-J-Butcher.pdf
    • http://muicuiu.dumb1.com/3a04a08a02a03a08/Agent-6-Leo-Demidov-3-by-Tom-Rob-Smith.pdf
    • http://muicuiu.dumb1.com/1a01a08a08a09a02a05/Ben-Venice-I-G-H-O-S-T-Agent-by-Rocko-Jerome.pdf
    • http://muicuiu.dumb1.com/1a01a00a09a02a04a04/Loki-Agent-of-Asgard-16-by-Al-Ewing.pdf
    • http://muicuiu.dumb1.com/5a08a00a05a04a08/Secret-Agent-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/3a03a08a02a05a07/The-Shooters-Presidential-Agent-4-by-W-E-B-Griffin.pdf