Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f095fa4208b3d5…

MALICIOUS

PDF

16.2 KB Created: 2019-11-28 22:19:14 +00:00 Authoring application: mPDF 5.7
MD5: 2371324e041e774a2426eb20a288bc25 SHA-1: b66fb38ad9f5c839368c66ae5c4b74cd1d774116 SHA-256: 93f095fa4208b3d528c718d4990edbe8e3c4c9c8186f6f2739271c04d3a4056c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The dominant host for these links is 'cefasfese.4pu.com'. No scripts were extracted from this sample, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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://cefasfese.4pu.com/4738739734733735/Rain-Dance-Venus-Diamond-1-by-Skye-Kathleen-Moody.pdf
    • http://cefasfese.4pu.com/4738739734734737/Blue-Poppy-Venus-Diamond-2-by-Skye-Kathleen-Moody.pdf
    • http://cefasfese.4pu.com/6738733732735733/Roble-s-Rain-Dance-by-Paula-Knight.pdf
    • http://cefasfese.4pu.com/1730731735731731/Moon-Dance-Vampire-for-Hire-1-by-J-R-Rain.pdf
    • http://cefasfese.4pu.com/3730733733731736/Moon-Dance-Vampire-for-Hire-1-by-J-R-Rain.pdf
    • http://cefasfese.4pu.com/7731734732734731/Venus-Aspiring-Venus-Rising-2-by-Golden-Angel.pdf
    • http://cefasfese.4pu.com/3731733730731736/Judy-Moody-Girl-Detective-Judy-Moody-9-by-Megan-McDonald.pdf
    • http://cefasfese.4pu.com/3731733730732733/Judy-Moody-and-the-Not-Bummer-Summer-Judy-Moody-10-by-Megan-McDonald.pdf
    • http://cefasfese.4pu.com/7731730731736/Judy-Moody-Declares-Independence-Judy-Moody-6-by-Megan-McDonald.pdf
    • http://cefasfese.4pu.com/4737736737735/Judy-Moody-Saves-the-World-Judy-Moody-3-by-Megan-McDonald.pdf
    • http://cefasfese.4pu.com/2737735734738737/Judy-Moody-Was-in-a-Mood-Judy-Moody-1-by-Megan-McDonald.pdf
    • http://cefasfese.4pu.com/2738730735737732/The-Diamond-That-Cuts-Through-Illusion-Commentaries-on-the-Prajnaparamita-Diamond-Sutra-by-Thich-Nhat-Hanh.pdf
    • http://cefasfese.4pu.com/1731735731734730732/Forty-Days-and-Forty-Nights-Rain-Rain-Rain-by-Joan-Gross.pdf
    • http://cefasfese.4pu.com/1737738731739730/Dance-Dance-Dance-The-Rat-4-by-Haruki-Murakami.pdf
    • http://cefasfese.4pu.com/1733731739733738/Inventions-By-Diamond-by-Diamond-W-Fields.pdf
    • http://cefasfese.4pu.com/2739738739731730/Through-Rain-and-Missing-Mantaurs-Elemental-Rain-1-by-Jeanne-Marcella.pdf
    • http://cefasfese.4pu.com/4733735732732738/Seas-of-Venus-Seas-of-Venus-1-2-by-David-Drake.pdf
    • http://cefasfese.4pu.com/4737739737735/Judy-Moody-was-in-a-Mood-Not-a-Good-Mood-A-Bad-Mood-Judy-Moody-1-by-Megan-McDonald.pdf
    • http://cefasfese.4pu.com/7738732739736734/The-Way-to-God-and-How-to-Find-It-by-Dwight-L-Moody-by-Dwight-L-Moody.pdf
    • http://cefasfese.4pu.com/9735736736738732/The-Rain-Falls-Like-Rain-Poems-by-David-Helwig.pdf
    • http://cefasfese.4pu.com/2737735734738737/Judy-Moody-Was-in-a-Mood-Judy-Moody-1-by-Megan-McDonal

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