Malicious PDF — malware analysis report

Static analysis result for SHA-256 480a347858e426f9…

MALICIOUS

PDF

20.5 KB Created: 2019-04-30 04:47:48 +01:00 Authoring application: mPDF 5.7
MD5: df606d9f8f798291bb2579755cc902ca SHA-1: 659f0bf3fafff8d40d243331dd1a99c47c0582de SHA-256: 480a347858e426f9eb62c8bc71efb0d4914fce6062992045cbd47018039393c1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. While the extracted URLs themselves are currently classified as benign, the sheer volume and the critical heuristic firing indicate a suspicious pattern. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/9a06a05a06a09a03/Monarch-Notes-on-Erich-Maria-Remarque-s-All-Quiet-on-the-Western-Front-by-John-S-White.pdf
    • http://muicuiu.dumb1.com/1a09a00a02a06a09/All-Quiet-on-the-Western-Front-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/9a01a07a03a03a04/All-Quiet-on-the-Western-Front-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/9a07a09a07a03a04/All-Quiet-on-the-Western-Front-Job-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/9a06a05a07a04a02/All-Quiet-on-the-Western-Front-Erich-Maria-Remarque-by-SparkNotes.pdf
    • http://muicuiu.dumb1.com/9a06a05a05a06a08/Erich-Maria-Remarque-s-All-Quiet-on-the-Western-Front-by-Harold-Bloom.pdf
    • http://muicuiu.dumb1.com/9a06a05a07a03a06/All-Quiet-On-The-Western-Front-Erich-Maria-Remarque-World-War-I-History-In-Literature-The-Story-Behind-by-Peter-Guti-rrez.pdf
    • http://muicuiu.dumb1.com/3a03a05a01a09/Three-Comrades-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/5a06a00a05a01a00/The-Last-Station-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/5a03a00a06a07a08/Die-nacht-in-Lissabon-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/5a04a03a00a04/Spark-of-Life-A-Novel-of-Resistance-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/3a03a07a04a09/Arch-of-Triumph-A-Novel-of-a-Man-Without-a-Country-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/9a06a05a06a06a05/Eight-Stories-Tales-of-War-and-Loss-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/1a01a05a08a06a06a05/Es-muss-einer-den-Frieden-beginnen-Jahrhundertautoren-gegen-den-Krieg-by-Erich-Maria-Remarque.pdf
    • http://muicuiu.dumb1.com/9a06a05a06a07a03/Opposite-Attraction-The-Lives-of-Erich-Maria-Remarque-and-Paulette-Goddard-by-Julie-Goldsmith-Gilbert.pdf
    • http://muicuiu.dumb1.com/1a00a02a04a08a07a04/Der-Einfluss-Des-Krieges-Auf-Die-Protagonisten-in--Das-Phantom-Des-Alexander-Wolf-Von-Gaito-Gasdanow-Und--Im-Westen-Nichts-Neues-Von-Erich-Maria-Remarque-by-M-Vey.pdf
    • http://muicuiu.dumb1.com/3a04a04a03a05/Fyodor-Dostoyevsky-s-Crime-and-Punishment-Monarch-Notes-by-John-D-Simons.pdf
    • http://muicuiu.dumb1.com/1a01a01a04a08a08a02/Dante-s-The-Divine-Comedy-Monarch-Notes-A-Guide-to-Understanding-the-World-s-Great-Writing-by-Jules-Gelernt.pdf
    • http://muicuiu.dumb1.com/9a04a01a01a08a04/Waffen-SS-Panzers-The-Western-Front-by-Tim-Ripley.pdf
    • http://muicuiu.dumb1.com/6a05a02a04a04a07/Dark-Journey-Three-key-NZ-battles-of-the-western-front-by-Glyn-Harper.pdf
    • http://muicuiu.dumb1.com/5a06a00a05a01a00/The-Last-Station-by-Erich-