Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe5737b390cd062…

MALICIOUS

PDF

15.4 KB Created: 2019-05-02 01:21:42 +01:00 Authoring application: mPDF 5.7
MD5: f4ef6bc85222ecf6d3c468f83feb520a SHA-1: 75994f1b11b4f32aeefe62eff90f098f87f1adf8 SHA-256: efe5737b390cd062bd6b1fdf9dd8e2559b9cf240e5ac270dc9b195f04dd4c72b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF_SEO_LINK_FARM heuristic indicates the document contains a large number of external links, all pointing to the same suspicious domain. While the ML classifier also flagged this as malicious, the specific intent appears to be to lure users to click on these links, potentially leading to further malicious content or phishing attempts. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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.dumb1.com/4a05a01a04a01a02/Rafferty-by-Bill-S-Ballinger.pdf
    • http://muicuiu.dumb1.com/2a08a01a00a02a05/The-Kindness-of-Kings-by-Chelsea-Ballinger.pdf
    • http://muicuiu.dumb1.com/1a03a02a04a02a08/Fragile-Rafferty-1-by-Shiloh-Walker.pdf
    • http://muicuiu.dumb1.com/1a03a02a02a03a03/Broken-Rafferty-2-by-Shiloh-Walker.pdf
    • http://muicuiu.dumb1.com/7a05a06a04a06a05/Carmel-s-Call-by-Howard-Rafferty.pdf
    • http://muicuiu.dumb1.com/4a07a06a06a06a05/Tempted-By-a-Touch-An-Unlikely-Hero-2-by-Kris-Rafferty.pdf
    • http://muicuiu.dumb1.com/3a09a09a07a09a05/The-Fourth-Watcher-Poke-Rafferty-Mystery-2-by-Timothy-Hallinan.pdf
    • http://muicuiu.dumb1.com/4a03a00a09a08a07/Even-Cowboys-Get-The-Blues-Lost-Loves-Harlequin-Temptation-No-505-by-Carin-Rafferty.pdf
    • http://muicuiu.dumb1.com/1a06a08a07a00a01/As-Bill-Sees-It-The-A-A-Way-of-Life-Selected-Writings-of-A-A-s-Co-Founder-by-Bill-W-.pdf
    • http://muicuiu.dumb1.com/9a09a00a03a08/Bill-the-Vampire-The-Tome-of-Bill-1-by-Rick-Gualtieri.pdf
    • http://muicuiu.dumb1.com/4a05a09a03a00a08/The-Treasure-Hunt-A-Little-Bill-Book-by-Bill-Cosby.pdf
    • http://muicuiu.dumb1.com/5a09a01a01a02a08/Boule-et-Bill---C-est-beau-l-amour-Biblio-Mango-Boule-et-Bill-by-d-39-apr-s-Roba.pdf
    • http://muicuiu.dumb1.com/5a09a01a01a03a00/Boule-et-Bill---quel-cirque-Biblio-Mango-Boule-et-Bill-by-d-39-apr-s-Roba.pdf
    • http://muicuiu.dumb1.com/4a02a06a00a08a03/The-Bill-James-Guide-to-Baseball-Managers-From-1870-to-Today-by-Bill-James.pdf
    • http://muicuiu.dumb1.com/8a05a05a01a07a05/Bill-Incardona-s-DVD---One-Pocket-Instructional-by-Bill-Incardona.pdf
    • http://muicuiu.dumb1.com/1a04a02a02a05a03/Bill-Wyman-s-Blues-Odyssey-by-Bill-Wyman.pdf
    • http://muicuiu.dumb1.com/6a06a09a06a04a00/Bill-McNeil-Presents-by-Bill-McNeil.pdf
    • http://muicuiu.dumb1.com/1a00a04a05a08a04a06/Bill-Coffin-s-Septimus-by-Bill-Coffin.pdf
    • http://muicuiu.dumb1.com/4a09a06a05a09a05/BILL-BRUFORD-THE-AUTOBIOGRAPHY-by-Bill-Bruford.pdf
    • http://muicuiu.dumb1.com/9a07a05a07a09/The-Ice-cream-Man-by-Bill-D-39-oa.pdf
    • http://muicuiu.dumb1.com/5a0

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