Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e71035f7ab0b997…

MALICIOUS

PDF

15.7 KB Created: 2019-04-30 03:24:40 +01:00 Authoring application: mPDF 5.7
MD5: 327248d2ce3786d80c1597ce6815a4a5 SHA-1: 00264cf6ebb5eaeb6dac3021268427ed48543d61 SHA-256: 1e71035f7ab0b99721506e44a458c53548b5511216248751f6288ce3dbef051c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

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. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/4a06a03a02a04a09/Mikhail-Bulgakov-s-The-White-Guard-In-A-Version-by-Andrew-Upton.pdf
    • http://muicuiu.dumb1.com/4a00a01a05a04a08/The-White-Guard-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a02a03/Manuscripts-Don-t-Burn-Mikhail-Bulgakov-A-Life-in-Letters-and-Diaries-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a02a09/The-Early-Plays-of-Mikhail-Bulgakov-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a07a04a04/The-Later-Plays-Of-M-Bulgakov-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/2a09a09a02a06a01/The-Master-and-Margarita-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/1a00a01a09a06a03a03/The-Master-and-Margarita-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a07a00/The-Crimson-Island-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/5a03a00a05a07/El-Maestro-y-Margarita-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/8a05a09a08a07a07/The-Master-and-Margarita-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/3a02a02a00a02/The-Master-and-Margarita-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a06a03a08/Moliere-or-The-Union-of-Hypocrites-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a03a08/Diaries-and-Selected-Letters-by-Mikhail-Bulgakov.pdf
    • http://muicuiu.dumb1.com/7a09a02a05a02a08/Mikhail-Bulgakov-A-Critical-Biography-by-Lesley-Milne.pdf
    • http://muicuiu.dumb1.com/5a01a03a07a00a04/Mikhail-Botvinnik-The-Life-and-Games-of-a-World-Chess-Champion-by-Andrew-Soltis.pdf
    • http://muicuiu.dumb1.com/2a03a08a01a05/Mouse-Guard-Legends-of-the-Guard-Vol-1-by-David-Petersen.pdf
    • http://muicuiu.dumb1.com/2a04a01a05a07/Mouse-Guard-Legends-of-the-Guard-Vol-3-by-David-Petersen.pdf
    • http://muicuiu.dumb1.com/3a05a07a01a05a00/The-Highland-Guard-Series-5-Book-Bundle-Highland-Guard-1-5-by-Monica-McCarty.pdf
    • http://muicuiu.dumb1.com/8a06a05a08a02/The-White-Earth-by-Andrew-McGahan.pdf
    • http://muicuiu.dumb1.com/1a02a00a00a08a04/Bright-Lights-and-White-Nights-by-Andrew-Carter.pdf
    • http://muicuiu.dumb1.com/3a02a02a00a02/The-Master-and-Margarita-by-Mikhail-Bul

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