Malicious PDF — malware analysis report

Static analysis result for SHA-256 3532259664a6e306…

MALICIOUS

PDF

15.9 KB Created: 2019-04-30 03:43:04 +01:00 Authoring application: mPDF 5.7
MD5: 7232af89e2bf75ae02d65a363bd2d990 SHA-1: 1cd1fe14322be5abdb3faab661e7d1634e9a18d1 SHA-256: 3532259664a6e30691c4ff2665953d5d4e3158e7b72309b0472926a3ff0f6d05
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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://muicuiu.du
    • http://muicuiu.dumb1.com/4a04a06a01a02a07/Honor-s-Reward-Rocky-Mountain-Legacy-5-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/4a04a06a01a08a08/Honor-s-Pledge-Rocky-Mountain-Legacy-1-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/2a04a03a07a00a05/Rocky-Mountain-Angel-Six-Pack-Ranch-4-Rocky-Mountain-House-4-by-Vivian-Arend.pdf
    • http://muicuiu.dumb1.com/4a04a00a05a08a06/Rocky-Mountain-Home-Six-Pack-Ranch-11-Rocky-Mountain-House-16-by-Vivian-Arend.pdf
    • http://muicuiu.dumb1.com/4a01a04a09a08a07/Rocky-Mountain-Cowboy-Christmas-Rocky-Mountain-Cowboys-1-by-Katie-Ruggle.pdf
    • http://muicuiu.dumb1.com/3a04a05a00a08a09/Rocky-Mountain-Dawn-Rocky-Mountain-Bride-1-by-Lee-Savino.pdf
    • http://muicuiu.dumb1.com/3a00a07a03a03a05/Rocky-Mountain-Match-Rocky-Mountain-1-by-Pamela-Nissen.pdf
    • http://muicuiu.dumb1.com/2a05a06a09a01/Rocky-Mountain-Redemption-Rocky-Mountain-2-by-Pamela-Nissen.pdf
    • http://muicuiu.dumb1.com/5a07a04a07a09/Indivisible-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/3a07a03a02a04a08/Twilight-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/1a08a08a02a03a09/The-Still-of-Night-A-Rush-of-Wings-2-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/3a01a08a01a09a06/Secrets-The-Michelli-Family-Series-1-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/5a06a08a01a03/The-Breath-of-Dawn-A-Rush-of-Wings-3-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/3a07a03a02a04a05/Sweet-Boundless-The-Diamond-of-the-Rockies-2-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/5a07a01a03a01/Secrets-The-Michelli-Family-Series-1-by-Kristen-Heitzmann.pdf
    • http://muicuiu.dumb1.com/3a04a08a05a03a04/Rocky-Mountain-Cowboy-by-S-A-Monk.pdf
    • http://muicuiu.dumb1.com/8a02a01a00a02a05/Rocky-Mountain-Kids-by-Linda-Goyette.pdf
    • http://muicuiu.dumb1.com/3a03a06a02a06a04/On-the-Chase-Rocky-Mountain-K9-Unit-2-by-Katie-Ruggle.pdf
    • http://muicuiu.dumb1.com/4a01a02a08a00a09/Rocky-Mountain-Man-Hunt-Collection-Box-Set-9-by-Taylor-Brooks.pdf
    • http://muicuiu.dumb1.com/8a00a01a01a05/Extraordinary-Women-of-the-Rocky-Mountain-West-by-Tim-Blevins.pdf