Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75bd1db257524c2…

MALICIOUS

PDF

14.8 KB Created: 2019-11-10 01:32:52 +00:00 Authoring application: mPDF 5.7
MD5: 0a5ed17a5b7172181785055f4846b3f7 SHA-1: bdaaa7233c438e62804de4618600d1ce8ee4361b SHA-256: f75bd1db257524c23fb1144ff5c6049494b7416e99d6ffb2ce6208edb5ca1a94
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, primarily hosted on the domain 'cefasfese.4pu.com'. This behavior is indicative of a link farm or a redirection scheme designed to lead users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/4734736733731739/Dragon-Killer-Reckoning-of-Dragons-1-by-Rob-May.pdf
    • http://cefasfese.4pu.com/2735733733735730/A-Tale-of-Two-Dragons-Dragon-Kin-0-2-by-G-A-Aiken.pdf
    • http://cefasfese.4pu.com/3730738738737739/Oh-My-Dragon-I-Like-Big-Dragons-3-by-Lani-Lynn-Vale.pdf
    • http://cefasfese.4pu.com/3737738738731732/Dragon-s-Devotion-Dragons-4-by-Willa-Okati.pdf
    • http://cefasfese.4pu.com/5738738730733733/Fated-for-the-Dragon-Lost-Dragons-2-by-Zoe-Chant.pdf
    • http://cefasfese.4pu.com/2735734732739732/Dragon-s-Claim-Dragons-of-Rur-by-Shea-Malloy.pdf
    • http://cefasfese.4pu.com/1731739736733731735/The-Dragon-s-Gem-Dragons-of-Grayhurst-1-by-Donna-Flynn.pdf
    • http://cefasfese.4pu.com/2739735734732730/Dragon-Song-Dragons-and-Visions-2-by-Jim-Murdoch.pdf
    • http://cefasfese.4pu.com/2733735739730734/Dragon-s-Blood-Pit-Dragons-1-by-Jane-Yolen.pdf
    • http://cefasfese.4pu.com/3730734737731737/Born-to-be-a-Dragon-Dragons-Forever-1-by-Eisley-Jacobs.pdf
    • http://cefasfese.4pu.com/4733734738733737/Dragon-s-Blood-Cruentus-Dragons-1-by-Brynn-Paulin.pdf
    • http://cefasfese.4pu.com/2738739739737733/Dragon-Her-Back-Las-Vegas-Dragons-3-by-Susannah-Scott.pdf
    • http://cefasfese.4pu.com/6733739734731730/Dragon-s-Domain-Dragons-Series-4-by-Thorarinn-Gunnarsson.pdf
    • http://cefasfese.4pu.com/1731738738732739/Luck-of-the-Dragon-Las-Vegas-Dragons-1-by-Susannah-Scott.pdf
    • http://cefasfese.4pu.com/1732730733737739/Dragon-s-Lair-Wind-Dragons-MC-1-by-Chantal-Fernando.pdf
    • http://cefasfese.4pu.com/2735734732733739/Dragon-Pirate-s-Prize-Dragons-Of-Mars-2-by-Leslie-Chase.pdf
    • http://cefasfese.4pu.com/2736733730734737/Dragon-s-Love-Red-Planet-Dragons-of-Tajss-3-by-Miranda-Martin.pdf
    • http://cefasfese.4pu.com/3738734739736734/We-Three-Dragons-A-Trio-of-Dragon-Tales-for-the-Holiday-Season-by-Ed-Greenwood.pdf
    • http://cefasfese.4pu.com/2730737736733736/Dragon-Guardian-s-Match-Dragons-Of-Mars-3-by-Leslie-Chase.pdf
    • http://cefasfese.4pu.com/2733739737730734/Stop-Dragon-My-Heart-Around-Las-Vegas-Dragons-2-by-Susannah-Scott.pdf
    • http://cefasfese.4pu.com/6733739734731730/Dragon-s-Domain-Dr