Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4ebb05437f47db…

MALICIOUS

PDF

22.1 KB Created: 2019-04-30 05:48:19 +01:00 Authoring application: mPDF 5.7
MD5: df90532b33dfd93e252565b22dd2046a SHA-1: bf2e54b3b5a19f9c7784a523c40c4f592e77f0ff SHA-256: bf4ebb05437f47db51b86a524c52b4fdb6e0f33a1fe86752daa79a3d8e63a016
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to direct users to malicious content. The ML classifier also flagged this document as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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/3a06a05a07a02a00/Trivia-Storm-1-200-Exciting-Questions-About-Anything-by-Michael-Gonzalez.pdf
    • http://muicuiu.dumb1.com/2a07a05a06a02a09/Escape-from-Havana-by-Michael-Gonzalez.pdf
    • http://muicuiu.dumb1.com/4a05a04a05a06a02/Angel-Falls-by-Michael-Paul-Gonzalez.pdf
    • http://muicuiu.dumb1.com/7a07a00a01a03a00/Trivia-Colorless-Tsukuru-Tazaki-and-His-Years-of-Pilgrimage-A-Novel-By-Haruki-Murakami-Trivia-On-Books-by-Trivion-Books.pdf
    • http://muicuiu.dumb1.com/7a07a00a01a02a09/Trivia-Colorless-Tsukuru-Tazaki-and-His-Years-of-Pilgrimage-by-Haruki-Murakami-Trivia-on-Books-by-Trivion-Books.pdf
    • http://muicuiu.dumb1.com/8a01a08a04a05a09/Miss-Massacre-s-Guide-to-Murder-and-Vengeance-by-Michael-Paul-Gonzalez.pdf
    • http://muicuiu.dumb1.com/6a06a00a08a00a08/Trivia-The-Perks-of-Being-a-Wallflower-A-Novel-By-Stephen-Chbosky-Trivia-On-Books-by-Trivion-Books.pdf
    • http://muicuiu.dumb1.com/8a05a02a06a05a02/Trivia-All-the-light-we-cant-see-by-Anthony-Doerr-Trivia-on-Books-by-Trivion-Books.pdf
    • http://muicuiu.dumb1.com/1a00a05a09a00a01a04/Trivia-Memory-Man-by-David-Baldacci-Trivia-On-Books-by-Trivion-Books.pdf
    • http://muicuiu.dumb1.com/2a01a01a00a03a03/The-Ultimate-World-Wrestling-Entertainment-Trivia-Book-The-Ultimate-WWE-Trivia-Book-by-Aaron-Feigenbaum.pdf
    • http://muicuiu.dumb1.com/3a03a00a03a02a03/The-Duck-and-the-Butterfly-Coaching-Questions-for-Leaders-at-Work-by-Natalie-Michael.pdf
    • http://muicuiu.dumb1.com/7a00a01a00a05a08/The-Book-of-Beautiful-Questions-The-Powerful-Questions-That-Will-Help-You-Decide-Create-Connect-and-Lead-by-Warren-Berger.pdf
    • http://muicuiu.dumb1.com/8a05a00a01/The-Coming-Storm-by-Michael-Lewis.pdf
    • http://muicuiu.dumb1.com/1a01a09a06a08a08a01/Superstars-Trivia-Facts-and-Quizzes-Cool-Facts-amp-Trivia-by-Superstars-.pdf
    • http://muicuiu.dumb1.com/3a09a09a02a01a03/World-by-Storm-Retimer-1-by-Michael-Angliss.pdf
    • http://muicuiu.dumb1.com/1a02a02a04a03a01/Storm-of-Lightning-Michael-Vey-5-by-Richard-Paul-Evans.pdf
    • http://muicuiu.dumb1.com/1a09a05a03a05a06/Storm-of-Lightning-Michael-Vey-5-by-Richard-Paul-Evans.pdf
    • http://muicuiu.dumb1.com/3a03a02a03a09a01/Sugarcane-Academy-How-a-New-Orleans-Teacher-and-His-Storm-Struck-Students-Created-a-School-to-Remember-by-Michael-Tisserand.pdf
    • http://muicuiu.dumb1.com/1a02a09a09a04a02/Diana-Wynne-Jones-An-Exciting-and-Exacting-Wisdom-by-Teya-Rosenberg.pdf
    • http://muicuiu.dumb1.com/2a05a04a09a09a07/Storm-Coming-A-Novel-of-the-Civil-War-in-Western-Virginia-Children-of-the-Storm-1-by-Jack-W-Lewis.pdf
    • http://muicuiu.dumb1.com/8a01a08a04a05a09/Miss-Massacre-s-Guide-to-Murder-and-Vengeance-by-Michael-Pa