Malicious PDF — malware analysis report

Static analysis result for SHA-256 81736e34fd58fff7…

MALICIOUS

PDF

31.9 KB Created: 2019-04-30 03:17:34 +01:00 Authoring application: mPDF 5.7
MD5: e8db4e285f5ce2b3c431fd717f877760 SHA-1: 6ceee497e43d67ae7685c9220e9ec879ccdce39a SHA-256: 81736e34fd58fff7c84a3145537d132247d94a0f03fe596839eb93bab04fd06d
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, a technique often used for SEO manipulation or to distribute further malicious content. While no scripts were explicitly extracted, the ML classifier and the link farm heuristic strongly indicate malicious intent. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious nature of the links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9670

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/8a03a03a04a00a06/The-Kevin-Show-An-Olympic-Athlete-s-Battle-with-Mental-Illness-by-Mary-Pilon.pdf
    • http://muicuiu.dumb1.com/1a00a09a01a01a09a00/Amazing-Olympic-Athlete-Wilma-Rudolph-by-Mary-Dodson-Wade.pdf
    • http://muicuiu.dumb1.com/1a01a09a08a05a04a07/How-I-Fight-My-Mental-Illness-by-Mary-Beth-Lester.pdf
    • http://muicuiu.dumb1.com/1a07a03a01a09a01/Journey-Untold-My-Mother-s-Struggle-with-Mental-Illnesses-Bipolar-paranoid-schizophrenia-or-other-forms-of-mental-illness-is-debilitating-for-everyone-including-the-families-left-to-try-to-cope-by-Yassin-Hall.pdf
    • http://muicuiu.dumb1.com/4a08a02a00a06a04/Insane-Asylums-A-Detailed-Synopsis-Of-Their-History-And-Mistreatment-Of-Patients-Psychopath-Sociopath-Mental-Illness-Personality-Disorders-Mental-Health-Insanity-Book-3-by-Alex-Rice.pdf
    • http://muicuiu.dumb1.com/3a08a05a06a05a04/Defying-Mental-Illness-by-Paul-Komarek.pdf
    • http://muicuiu.dumb1.com/2a00a03a05a06a09/The-Price-of-Silence-A-Mom-s-Perspective-on-Mental-Illness-by-Liza-Long.pdf
    • http://muicuiu.dumb1.com/6a04a03a01a02a01/Van-Gogh-s-Inner-Struggle-Life-Work-and-Mental-Illness-by-Liesbeth-Heenk.pdf
    • http://muicuiu.dumb1.com/3a08a05a08a04a04/I-am-Not-Sick-I-Don-t-Need-Help-How-to-Help-Someone-With-Mental-Illness-Accept-Treatment-by-Xavier-Francisco-Amador.pdf
    • http://muicuiu.dumb1.com/2a02a03a08a08/No-Really-We-Want-You-to-Laugh-Mental-Illness-and-Stand-Up-Comedy-Transforming-Lives-by-Dave-Mowry.pdf
    • http://muicuiu.dumb1.com/3a05a02a07a02a09/Poets-on-Prozac-Mental-Illness-Treatment-and-the-Creative-Process-by-Richard-M-Berlin.pdf
    • http://muicuiu.dumb1.com/1a04a03a00a06a06/Doctoring-the-Mind-Is-Our-Current-Treatment-of-Mental-Illness-Really-Any-Good-by-Richard-P-Bentall.pdf
    • http://muicuiu.dumb1.com/3a00a06a03a07a06/Alwin-Schockem-hle-1976-Olympic-Show-Jumping-Gold-Medalist-from-West-Germany-by-Ulrich-Kaiser.pdf
    • http://muicuiu.dumb1.com/2a03a07a06a02a07/Great-and-Desperate-Cures-The-Rise-and-Decline-of-Psychosurgery-and-Other-Radical-Treatments-for-Mental-Illness-by-Elliot-S-Valenstein.pdf
    • http://muicuiu.dumb1.com/3a03a06a08a07a04/Surviving-PTSD-amp-moral-injury-How-an-Afghanistan-veteran-breaks-the-silence-on-mental-illness-by-Erik-Krikke.pdf
    • http://muicuiu.dumb1.com/9a00a03a07a08a07/Mental-Fitness-Training-Improving-your-brain-s-mental-toughness-for-life-Mental-Fitness-mental-training-brain-power-self-improvement-mental-strength-Book-1-by-Stephen-Cabo.pdf
    • http://muicuiu.dumb1.com/7a02a07a04a00/Anatomy-of-an-Epidemic-Magic-Bullets-Psychiatric-Drugs-and-the-Astonishing-Rise-of-Mental-Illness-in-America-by-Robert-Whitaker.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a09a00a09/Defying-Mental-Illness-2014-Edition-Finding-Recovery-with-Community-Resources-and-Family-Support-by-Paul-Komarek.pdf
    • http://muicuiu.dumb1.com/3a08a05a09a02a08/Managing-Chronic-Illness-Using-the-Four-Phase-Treatment-Approach-A-Mental-Health-Professional-s-Guide-to-Helping-Chronically-Ill-People-by-Patricia-A-Fennell.pdf
    • http://muicuiu.dumb1.com/3a05a02a05a02a01/Hannah-My-True-Story-of-Drugs-Cutting-and-Mental-Illness-by-Hannah-Westberg.pdf

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