Malicious PDF — malware analysis report

Static analysis result for SHA-256 798b3c3169634a7b…

MALICIOUS

PDF

14.6 KB Created: 2019-05-02 01:40:07 +01:00 Authoring application: mPDF 5.7
MD5: 63d62eb78dc2964fff56c2086671a90f SHA-1: ea2222400a90284be5dee12447000f33f1c00c86 SHA-256: 798b3c3169634a7b657e00896ba4804228c6f956a3cc3352d776d4f8f68ec9e3
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 'PDF_SEO_LINK_FARM' heuristic. While the document body is heavily obfuscated, the presence of numerous URLs suggests a malicious intent to redirect users. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves tricking users into clicking these links, potentially leading to malicious websites or further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/4a09a01a04a05a05/The-Drowned-Kingdom-The-Impossible-Quest-4-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/4a09a02a00a06a02/Wolves-of-the-Witchwood-The-Impossible-Quest-2-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/4a09a02a04a07a02/Battle-of-the-Heroes-The-Impossible-Quest-5-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/4a09a01a04a04a04/The-Beast-of-Blackmoor-Bog-The-Impossible-Quest-3-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/2a08a05a06a06a03/The-Wild-Girl-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/2a07a03a04a02a03/The-Puzzle-Ring-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a05a07a05a09a00/The-Wildkin-s-Curse-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/7a08a01a08a02a05/The-Cat-s-Eye-Shell-Chain-of-Charms-4-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/2a04a04a09a09a06/Dragonclaw-The-Witches-of-Eileanan-1-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/2a05a00a09a01a09/Two-Hours-The-Quest-to-Run-the-Impossible-Marathon-by-Ed-Caesar.pdf
    • http://muicuiu.dumb1.com/7a08a01a08a02a04/The-Herb-of-Grace-Chain-of-Charms-3-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a05a08a03a09a02/The-Butterfly-in-Amber-Chain-of-Charms-6-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a00a04a03a09a01/The-Forbidden-Land-The-Witches-of-Eileanan-4-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a00a04a03a05a00/The-Cursed-Towers-The-Witches-of-Eileanan-3-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/7a08a01a06a09a07/The-Gypsy-Crown-Chain-of-Charms-1-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/7a08a01a08a02a07/The-Butterfly-in-Amber-Chain-of-Charms-6-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a03a01a09a02a08/The-Silver-Horse-The-Chain-of-Charms-2-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a00a04a03a00a06/The-Pool-of-Two-Moons-The-Witches-of-Eileanan-2-by-Kate-Forsyth.pdf
    • http://muicuiu.dumb1.com/1a06a06a04/Fans-of-the-Impossible-Life-by-Kate-Scelsa.pdf
    • http://muicuiu.dumb1.com/9a08a09a02a08/Kingdom-of-Magic-3-Three-Heroes-Begin-their-Quest-by-Julie-Gamble.pdf

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