Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ed403b8c30d1a3…

MALICIOUS

PDF

12.6 KB Created: 2019-05-02 17:35:43 +01:00 Authoring application: mPDF 5.7
MD5: 8d104fea3fb945edcbea935a53289508 SHA-1: 24a19418e834798c94043111340e23a6b37a8b2a SHA-256: c0ed403b8c30d1a3b3d412dccb917a9dd0eacc9696a04440c2d8ddae6330eef6
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a link farm with 20 external links, predominantly pointing to book titles hosted on the domain 'cefasfese.4pu.com'. While the individual linked PDFs are marked as benign, the sheer volume and the nature of the domain suggest a tactic to artificially inflate search engine rankings or to distribute potentially malicious content disguised as legitimate documents. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the immediate intent beyond the link farm.

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/1738731735733738/If-I-Ran-the-Circus-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/2733735733730733/Dr-Seuss-s-ABC-An-Amazing-Alphabet-Book-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/7739733736739730/The-Cat-in-the-Hat-by-Dr-Seuss-and-Kelsey-Grammer-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/4735731737739/The-Foot-Book-Dr-Seuss-s-Wacky-Book-of-Opposites-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/6734730734732/The-Cat-in-the-Hat-and-Other-Dr-Seuss-Favorites-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/4731737737737/The-Secret-Art-of-Dr-Seuss-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/2734735730734736/Dr-Seuss-s-Sleep-Book-Yellow-Back-Book-Dr-Seuss---Yellow-Back-Book-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/2735733730738731/Oh-Say-Can-You-Say-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/4732734732737733/Hop-on-Pop-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/4735739739739732/You-re-Only-Old-Once-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/3732732732730/The-Cat-in-the-Hat-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/3739738731739735/If-I-Ran-the-Zoo-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/1733739734732734/Dr-Seuss-s-ABC-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/3735734731730/Fox-in-Socks-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/2735733730737739/What-Was-I-Scared-Of-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/5733734739737737/Die-Loraks-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/1738731735734731/Did-I-Ever-Tell-You-How-Lucky-You-Are-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/2735739730739730/Oh-the-Places-You-ll-Go-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/8732737733733739/The-Cat-in-the-Hat-Songbook-by-Dr-Seuss.pdf
    • http://cefasfese.4pu.com/9739739734734732/Hay-Un-Molillo-En-Mi-Bolsillo-by-Dr-Seuss.pdf

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