Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc4867d763c6888…

MALICIOUS

PDF

16.5 KB Created: 2019-04-30 04:54:45 +01:00 Authoring application: mPDF 5.7
MD5: cc3e160c38be388ae2f626eb0a383807 SHA-1: 248cc7b0bc1f0eca132e1b1486a407b4d572c928 SHA-256: 0dc4867d763c688889f5d6ae457b2914f1c6b172d0e57dcf9e4ed5c4e0fd72cf
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, identified as a link farm. While the document body is unreadable, the heuristic 'PDF_SEO_LINK_FARM' strongly suggests a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The presence of a visual download button further supports a deceptive user interaction pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/3a02a01a07a00a06/The-Necklace-Affair-Captain-Lacey-Regency-Mysteries-4-5-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/3a02a01a06a07a07/A-Death-in-Norfolk-Captain-Lacey-Regency-Mysteries-7-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/3a02a02a00a02a02/The-Glass-House-Captain-Lacey-Regency-Mysteries-3-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/3a02a00a01a09a04/The-Hanover-Square-Affair-Captain-Lacey-1-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/4a08a07a01a05a06/A-Death-in-Norfolk-Captain-Lacey-7-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/4a08a07a01a05a07/A-Covent-Garden-Mystery-Captain-Lacey-6-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/5a00a08a00a02a03/The-Disappearance-of-Miss-Sarah-Oswald-Captain-Lacey-4-7-by-Ashley-Gardner.pdf
    • http://muicuiu.dumb1.com/3a07a00a03a09a00/The-Red-Necklace-by-Sally-Gardner.pdf
    • http://muicuiu.dumb1.com/3a02a01a04a00/The-Red-Necklace-French-Revolution-1-by-Sally-Gardner.pdf
    • http://muicuiu.dumb1.com/4a01a09a05a08a04/My-Fair-Captain-Sci-Regency-1-by-J-L-Langley.pdf
    • http://muicuiu.dumb1.com/3a04a09a01a04a09/A-Regency-Captain-s-Prize-by-Margaret-McPhee.pdf
    • http://muicuiu.dumb1.com/4a07a03a05a09a04/The-Devil-s-Necklace-Necklace-Trilogy-2-by-Kat-Martin.pdf
    • http://muicuiu.dumb1.com/3a00a02a06a03a00/S-mored-Lacey-Luzzi-Mafia-Mysteries-5-by-Gina-LaManna.pdf
    • http://muicuiu.dumb1.com/3a00a02a06a03a04/Sparkled-Lacey-Luzzi-Mafia-Mysteries-2-by-Gina-LaManna.pdf
    • http://muicuiu.dumb1.com/4a09a03a07/An-Affair-to-Dismember-Matchmaker-Mysteries-1-by-Elise-Sax.pdf
    • http://muicuiu.dumb1.com/1a07a06a09a02a00/The-Care-amp-Feeding-of-Pirates-Regency-Pirates-3-by-Jennifer-Ashley.pdf
    • http://muicuiu.dumb1.com/4a09a00a00a04a01/The-Affair-of-the-39-Cufflinks-Burford-Family-Mysteries-3-by-James-Anderson.pdf
    • http://muicuiu.dumb1.com/3a03a00a08a07a08/The-Arnifour-Affair-Colin-Pendragon-Mysteries-1-by-Gregory-Harris.pdf
    • http://muicuiu.dumb1.com/4a04a09a02a05a08/The-Case-Of-The-Phantom-Fortune-Perry-Mason-Mysteries-by-Erle-Stanley-Gardner.pdf
    • http://muicuiu.dumb1.com/4a06a09a08a09a02/The-Affair-of-the-Bloodstained-Egg-Cosy-Burford-Family-Mysteries-1-by-James-Anderson.pdf