Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0746ceac426eff8…

MALICIOUS

PDF

12.5 KB Created: 2019-05-04 11:43:57 +01:00 Authoring application: mPDF 5.7
MD5: ddec98776f74322f72a6e0752bf4ff1f SHA-1: 4edf4ee0d0d7d5efaac95aa52332d959a91f0bce SHA-256: c0746ceac426eff8ecdc743eaa77c4de31fa6618f75f391a5973757a6a08f7b4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded external links. The heuristic PDF_SEO_LINK_FARM indicates a link farm, with the dominant host being 'cefasfese.4pu.com'. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to direct users to external resources, potentially for malicious purposes such as phishing or malware distribution. The ML classifier's high score further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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/5731733738736730/Vagabond-Volume-18-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/5731733738736738/Vagabond-Volume-10-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/6738733737733737/Vagabond-Volume-28-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/6738733737734731/Vagabond-Volume-29-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/5731733738735737/Vagabond-Volume-21-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/6738733738732735/Vagabond-Vol-2-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/6738733737735739/Slam-Dunk-Vol-12-by-Takehiko-Inoue.pdf
    • http://cefasfese.4pu.com/6738733738732736/Midori-Days-Volume-3-Midori-Days-3-by-Kazurou-Inoue.pdf
    • http://cefasfese.4pu.com/6738733737731731/Midori-Days-Volume-1-Midori-Days-1-by-Kazurou-Inoue.pdf
    • http://cefasfese.4pu.com/6738733738732738/Midori-Days-Volume-8-Midori-Days-8-by-Kazurou-Inoue.pdf
    • http://cefasfese.4pu.com/6738733738733731/Midori-Days-Volume-4-Midori-Days-4-by-Kazurou-Inoue.pdf
    • http://cefasfese.4pu.com/8735736732731735/Shi-no-shima-by-Takehiko-Fukunaga.pdf
    • http://cefasfese.4pu.com/8733737736735/The-Vagabond-by-Colette.pdf
    • http://cefasfese.4pu.com/3734737734732735/Vagabond-by-Jeremy-James.pdf
    • http://cefasfese.4pu.com/2733735732738738/Rasmus-and-the-Vagabond-by-Astrid-Lindgren.pdf
    • http://cefasfese.4pu.com/1734732737734730/Paris-Vagabond-by-Jean-Paul-Cl-bert.pdf
    • http://cefasfese.4pu.com/4735735738735732/Released-The-Vagabond-Circus-3-by-Sarah-Noffke.pdf
    • http://cefasfese.4pu.com/3735733735736738/The-Hunting-Gun-by-Yasushi-Inoue.pdf
    • http://cefasfese.4pu.com/7731736738738734/Lou-LAN-and-Other-Stories-by-Yasushi-Inoue.pdf
    • http://cefasfese.4pu.com/1737736732731739/BTOOOM-Vol-1-by-Junya-Inoue.pdf

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