Malicious PDF — malware analysis report

Static analysis result for SHA-256 108764eb291e8b66…

MALICIOUS

PDF

16.6 KB Created: 2019-04-30 02:16:44 +01:00 Authoring application: mPDF 5.7
MD5: bb458b4a220bd81079f12a4f83202509 SHA-1: 7b7fabbe56855119303e393f5497f4bbbc9cb952 SHA-256: 108764eb291e8b6652638be1a2b7a87486e903e5d3b124bc69cddcc8a79f772f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged the document as malicious, the specific intent appears to be the creation of a link farm rather than direct payload delivery. The embedded URLs themselves are not directly malicious but are used in bulk to potentially manipulate search engine results or drive traffic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9810

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/4a09a05a00a02a07/Fractured-Slated-2-by-Teri-Terry.pdf
    • http://muicuiu.dumb1.com/3a01a05a03a03a06/Fractured-Soul-Fractured-Light-2-by-Rachel-McClellan.pdf
    • http://muicuiu.dumb1.com/4a08a09a05a09a03/New-Zapata-by-Teri-Hall.pdf
    • http://muicuiu.dumb1.com/2a02a04a02a04a07/The-Cursed-Land-by-Teri-McLaren.pdf
    • http://muicuiu.dumb1.com/8a08a07a03a05a09/From-a-Single-Seed-by-Teri-Ames.pdf
    • http://muicuiu.dumb1.com/1a09a04a03/Velvet-Undercover-by-Teri-Brown.pdf
    • http://muicuiu.dumb1.com/9a04a02a05a09a09/Nanny-Oggs-Kochbuch-Ein-berraschend-n-tzlicher-Almanach-mit-erstaunlichen-Rezepten-aus-Terry-Pratchetts-Scheibenwelt-by-Terry-Pratchett.pdf
    • http://muicuiu.dumb1.com/8a08a07a03a05a03/Speedbumps-Flooring-It-Through-Hollywood-by-Teri-Garr.pdf
    • http://muicuiu.dumb1.com/8a08a07a03a05a02/Lost-and-Found-My-Heart-Is-Yours-3-by-Teri-McGill.pdf
    • http://muicuiu.dumb1.com/3a07a04a05a03a06/Princess-Pearl-The-Dragon-Arch-1-by-Teri-Tao.pdf
    • http://muicuiu.dumb1.com/2a09a04a08a09a09/Turn-On-the-Light-So-I-Can-Hear-by-Teri-Kanefield.pdf
    • http://muicuiu.dumb1.com/7a07a07a01a09a09/Hark-Aardvark-Angels-Sing-by-Teri-Sloat.pdf
    • http://muicuiu.dumb1.com/1a08a01a00a06a02/Burnt-Toast-And-Other-Philosophies-of-Life-by-Teri-Hatcher.pdf
    • http://muicuiu.dumb1.com/8a08a07a04a02a08/His-Ballerina-Bride-The-Drake-Diamonds-1-by-Teri-Wilson.pdf
    • http://muicuiu.dumb1.com/1a01a03a01a07a00a09/Accidentally-in-Love-with-the-Pilot-by-Teri-Anne-Stanley.pdf
    • http://muicuiu.dumb1.com/6a08a04a07a05/Burnt-Toast-And-Other-Philosophies-of-Life-by-Teri-Hatcher.pdf
    • http://muicuiu.dumb1.com/1a08a06a05a04a08/Jonestown-Lullaby-Poems-and-Pictures-by-Teri-Buford-O-39-Shea.pdf
    • http://muicuiu.dumb1.com/3a00a08a08a06/Fractured-by-D-J-Molles.pdf
    • http://muicuiu.dumb1.com/5a00a03a08a02a01/Making-the-Match-The-Right-Book-for-the-Right-Reader-at-the-Right-Time-Grades-4-12-by-Teri-S-Lesesne.pdf
    • http://muicuiu.dumb1.com/6a03a07a02a07a06/Chat-Room-Teri-Blake-Addison-Mystery-2-by-Linda-Hall.pdf

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