Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32faf0ec42a6779…

MALICIOUS

PDF

19.9 KB Created: 2019-04-30 05:28:51 +01:00 Authoring application: mPDF 5.7
MD5: cd63448a45f0857ed6ca4d63d33d63e4 SHA-1: d70fa0183299ae0119e501140da0894b71b6e264 SHA-256: a32faf0ec42a67798478dcaea2139957c591dfa5779f2e367c5a00c4a02e50bf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm or redirection tactic. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. While no scripts were extracted, the sheer volume of links points to an attempt to direct users to external, potentially malicious, resources.

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://seasasac.lflinkup.com/1da1da5da5da7da2da7/The-Dave-Brubeck-Anthology-Piano-Solos-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da8da8da6/The-Genius-of-Dave-Brubeck-Bk-1-Piano-Solos-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da5da3/Dave-Brubeck-Selections-from-Seriously-Brubeck-Original-Piano-Sheet-Music-for-the-Late-Intermediate-to-Early-Advanced-Pianist-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da8da8da4/Time-Out-The-Dave-Brubeck-Quartet-Easy-Piano-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da3da7/Nocturnes-by-Dave-Brubeck-Piano-Solos-by-John-Salmon.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da2da1/Simply-Brubeck-The-Music-of-Dave-Brubeck----26-of-His-Top-Jazz-Classics-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da5da2/Dave-Brubeck-204-Success-Facts---Everything-You-Need-to-Know-about-Dave-Brubeck-by-Cheryl-Vaughan.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da9da6da8/Dave-Brubeck-s-Two-Part-Adventures-Original-Two-Part-Arrangements-0-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da3da4/The-Harmony-Of-Dave-Brubeck-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da9da5da5/To-Hope-a-Celebration-a-Mass-in-the-Revised-Roman-Ritual-Satb-with-Satb-Soli-Piano-Acc-amp-Opt-Handbells-amp-Celeste-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da2da5/Seriously-Brubeck-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da6da0da4da6/No-2-Struttin-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da8da8da8/My-One-Bad-Habit-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da6da0da4da5/Three-to-Get-Ready-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da8da9da6/Kathy-s-Waltz-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da8da9da3/Daniel-Arnold-Yaghsizian-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da6da0da4da3/Strange-Meadow-Lark-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da9da8da4/Roy-Hargrove---B-flat-Instrument-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da9da8da5/Cast-Your-Fate-to-the-Wind-by-Dave-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da6da0da3da7/Rhythmic-Etudes-STEREOGRAMS-for-Bass-Clef-Instruments-Volume-I-by-David-Brubeck-by-David-Brubeck.pdf
    • http://seasasac.lflinkup.com/1da1da5da5da7da5da2/Dave-Brubeck-204-Success-Facts---E

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