Malicious PDF — malware analysis report

Static analysis result for SHA-256 173a4db6cdc81a2e…

MALICIOUS

PDF

18.3 KB Created: 2019-05-09 00:56:20 +01:00 Authoring application: mPDF 5.7
MD5: c7d7944a3ff0d8901833398ea9bbf01b SHA-1: 18bba1d302d15a07fa234f8451e4324e3ade33fa SHA-256: 173a4db6cdc81a2e477e51956563dfd16cb96d6134d3c2a75e8e39b404edf96e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ML classifier also flagged this PDF as malicious with high confidence. While the document body text is heavily obfuscated, the presence of numerous URLs and the 'PDF_SEO_LINK_FARM' heuristic indicate a pattern of link-based redirection, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/8a08a06a09a01a08/Laurie-Halse-Anderson-Books-2017-Checklist-Reading-Order-of-Seeds-of-America-Series-Vet-Volunteers-Series-and-List-of-All-Laurie-Halse-Anderson-Books-by-Platinum-List.pdf
    • http://muicuiu.dumb1.com/8a08a06a04a06a02/Laurie-Halse-Anderson-Bundle-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/4a01a08a02a03a09/Catalyst-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/1a01a08a08a06a07a04/Wintergirls-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/2a00a08a05a04a02/Wintergirls-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/4a04a04a00a03/Catalyst-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a06a07a00/No-Time-for-Mother-s-Day-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a08a01a05/Burger-Wars-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a06a03a01/Say-Good-Bye-Wild-at-Heart-5-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/4a06a06a00a06a00/Trickster-Wild-at-Heart-3-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/4a01a07a05a03a09/The-Hair-of-Zoe-Fleefenbacher-Goes-to-School-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a06a03a08/Time-to-Fly-Wild-at-Heart-10-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a04a06a01/Laurie-Halse-Anderson-Speaking-in-Tongues-by-Wendy-J-Glenn.pdf
    • http://muicuiu.dumb1.com/8a08a06a04a06a03/Storm-Rescue-Wild-at-Heart-6-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a08a02a06/Speak-A-Novel-By-Laurie-Halse-Anderson-Conversation-Starters-by-Daily-Books.pdf
    • http://muicuiu.dumb1.com/8a08a06a08a02a05/Summary-of-Speak-by-Laurie-Halse-Anderson-Conversation-Starters-by-BookHabits.pdf
    • http://muicuiu.dumb1.com/5a08a05a00a05/The-Seeds-of-America-Trilogy-Chains-Forge-Ashes-by-Laurie-Halse-Anderson.pdf
    • http://muicuiu.dumb1.com/8a08a06a09a01a07/A-Study-Guide-for-Laurie-Halse-Anderson-s-quot-Fever-1793-quot-Novels-for-Students-by-Cengage-Learning-Gale.pdf
    • http://muicuiu.dumb1.com/1a05a09a02a05a03/Laurie-Anderson-All-the-Things-I-Lost-in-the-Flood-by-Laurie-Anderson.pdf
    • http://muicuiu.dumb1.com/3a01a00a07a02a04/The-Great-Turkey-Cookbook-385-Turkey-Recipes-for-Every-Day-and-Holidays-by-Virginia-Hoffman.pdf