Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ae38f33a9207d6…

MALICIOUS

PDF

29.1 KB Created: 2019-04-30 08:42:46 +01:00 Authoring application: mPDF 5.7
MD5: 9646936d1d26ee117f98ae66ec96d18a SHA-1: 8f2759c7d06c9ae1b7e2e282d9e6ecf6845a0996 SHA-256: 75ae38f33a9207d624305e6a74b3fe96af8b84c32c26cd0524bee2a34d1ca12e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, suggesting an attempt to direct users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the presence of embedded URLs and the 'SEO Link Farm' heuristic indicate a likely attempt to trick users into downloading potentially harmful files, possibly through a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9695

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/2a01a03a05a02a04/Omnibus-Shroud-For-A-Nightingale-The-Black-Tower-Death-Of-An-Expert-Witness-by-P-D-James.pdf
    • http://muicuiu.dumb1.com/1a07a04a06a06/Shroud-for-a-Nightingale-Adam-Dalgliesh-4-by-P-D-James.pdf
    • http://muicuiu.dumb1.com/5a00a05a05a03a02/Until-Death-Do-Us-Part-Omnibus-2-in-1-Edition-Vol-11-Includes-Vol-21-amp-22-Until-Death-Do-Us-Part-Omnibus-11-by-Hiroshi-Takashige.pdf
    • http://muicuiu.dumb1.com/1a07a09a07a06a06/Until-Death-Do-Us-Part-Omnibus-2-in-1-Edition-Vol-2-Includes-Vol-3-amp-4-Until-Death-Do-Us-Part-Omnibus-2-by-Hiroshi-Takashige.pdf
    • http://muicuiu.dumb1.com/5a00a05a05a02a00/Until-Death-Do-Us-Part-Omnibus-2-in-1-Edition-Vol-10-Includes-Vol-19-amp-20-Until-Death-Do-Us-Part-Omnibus-10-by-Hiroshi-Takashige.pdf
    • http://muicuiu.dumb1.com/1a06a02a08a09a00/Western-genre-Novels-including-The-Dark-Tower-Ii-The-Drawing-Of-The-Three-The-Dark-Tower-The-Gunslinger-The-Dark-Tower-Iv-Wizard-And-Glass-The-Dark-Tower-Iii-The-Waste-Lands-The-Dark-Tower-V-Wolves-Of-The-Calla-The-Wind-Through-The-Keyhole-by-Hephaestus-Books.pdf
    • http://muicuiu.dumb1.com/4a05a08a01a02a02/Shroud-of-the-Gnome-by-James-Tate.pdf
    • http://muicuiu.dumb1.com/1a01a04a04a08a09a04/When-Plague-Strikes-The-Black-Death-Smallpox-AIDS-by-James-Cross-Giblin.pdf
    • http://muicuiu.dumb1.com/2a03a07a01a02a00/Witness-in-Death-In-Death-10-by-J-D-Robb.pdf
    • http://muicuiu.dumb1.com/4a08a08a07a05/Plague-and-Fire-Battling-Black-Death-and-the-1900-Burning-of-Honolulu-s-Chinatown-by-James-C-Mohr.pdf
    • http://muicuiu.dumb1.com/4a07a00a06a03a07/Articles-on-in-Death-Novel-Series-Including-In-Death-Eve-Dallas-Naked-in-Death-Roarke-in-Death-Characters-Glory-in-Death-Immortal-in-Death-Vengeance-in-Death-in-Death-Technology-Origin-in-Death-Memory-in-Death-Novel-by-Hephaestus-Books.pdf
    • http://muicuiu.dumb1.com/5a06a05a01a05a05/A-Privileged-Witness-The-Truth-About-Billionaire-Edmond-Safra-s-Death-by-Ted-Maher.pdf
    • http://muicuiu.dumb1.com/1a05a03a04a03a06/Myself-as-Witness-by-James-Goldman.pdf
    • http://muicuiu.dumb1.com/3a01a04a02a00a04/The-Black-Tower-by-Louis-Bayard.pdf
    • http://muicuiu.dumb1.com/4a04a05a05a09a03/Final-Witness-by-James-Scott-Bell.pdf
    • http://muicuiu.dumb1.com/8a04a02a08a06a02/The-Murder-of-Roger-Ackroyd-The-Mystery-of-the-Blue-Train-Dumb-Witness-Death-on-the-Nile-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/8a09a09a06a00a06/The-Husband-s-Secret-by-Liane-Moriarty----Expert-Book-Review-amp-Analysis-by-Expert-Book-Reviews.pdf
    • http://muicuiu.dumb1.com/8a01a01a00a05a07/And-the-Mountains-Echoed-by-Khaled-Hosseini---Expert-Book-Review-amp-Analysis-by-Expert-Book-Reviews.pdf
    • http://muicuiu.dumb1.com/1a00a03a05a06a06a07/The-Rose-Garden-by-Susanna-Kearsley----Expert-Book-Review-amp-Analysis-by-Expert-Book-Reviews.pdf
    • http://muicuiu.dumb1.com/2a00a04a09a05a07/Once-Upon-a-Tower-Fairy-Tales-5-by-Eloisa-James.pdf

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