Malicious PDF — malware analysis report

Static analysis result for SHA-256 38df058577cf6ae3…

MALICIOUS

PDF

17.9 KB Created: 2019-05-01 18:51:28 +01:00 Authoring application: mPDF 5.7
MD5: 96f22dab298da8deb390802042ced046 SHA-1: 0b6087a26bf876fdb7af12e0e258bf5b2c7f0f65 SHA-256: 38df058577cf6ae365e599a2811b3a5606503699d304534f16e3f6bff73384b8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are labeled as benign, the sheer volume and structure suggest an attempt to manipulate search engine results or redirect users to potentially malicious content hosted elsewhere. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9788

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/6737738738733738/Bad-Girls-Gde-to-Open-Road-by-Cameron-Tuttle.pdf
    • http://cefasfese.4pu.com/9739730739738732/Hill-s-Wilmington-New-Hanover-County-N-C-City-Directory-1961-Including-Audubon-Devon-Park-Edgewood-Foxtown-Garden-City-Hanover-Heights-Highwood-Park-Idlewild-Long-Leaf-Hills-Oak-Court-Oak-Crest-Piney-Woods-and-Winter-Park-by-Hill-Directory-Company.pdf
    • http://cefasfese.4pu.com/3733730739736738/Take-a-Breath-by-S-K-Paisley.pdf
    • http://cefasfese.4pu.com/6738738731730/The-Barefoot-Bride-by-Rebecca-Paisley.pdf
    • http://cefasfese.4pu.com/3737737737738730/Every-Waking-Hour-by-Paisley-Smith.pdf
    • http://cefasfese.4pu.com/2736738736734730/Where-the-Light-Gets-In-Losing-My-Mother-Only-to-Find-Her-Again-by-Kimberly-Williams-Paisley.pdf
    • http://cefasfese.4pu.com/1730732736732739737/Cameron-of-the-Seas-Cameron-Series-3-by-Angelin-Sydney.pdf
    • http://cefasfese.4pu.com/8731738732736735/The-Hanover-Block-by-Gregor-Xane.pdf
    • http://cefasfese.4pu.com/4734734737738733/Cameron-Cameron-Brothers-2-by-Beverly-Barton.pdf
    • http://cefasfese.4pu.com/3733732737733732/The-Daughters-of-Cameron-Cameron-3-by-Aleen-Malcolm.pdf
    • http://cefasfese.4pu.com/2737736739734736/Graveyard-Child-The-Black-Sun-s-Daughter-5-by-M-L-N-Hanover.pdf
    • http://cefasfese.4pu.com/2734736732732738/Unclean-Spirits-The-Black-Sun-s-Daughter-1-by-M-L-N-Hanover.pdf
    • http://cefasfese.4pu.com/3732732738734734/Silence-in-Hanover-Close-Charlotte-amp-Thomas-Pitt-9-by-Anne-Perry.pdf
    • http://cefasfese.4pu.com/5738738738736/To-Hell-in-a-Handbasket-Claire-Hanover-Gift-Basket-Designer-2-by-Beth-Groundwater.pdf
    • http://cefasfese.4pu.com/4732738735732733/Gabriel-by-Lisa-Tuttle.pdf
    • http://cefasfese.4pu.com/2737733732739/The-Bone-Flute-by-Lisa-Tuttle.pdf
    • http://cefasfese.4pu.com/3738735733737734/The-Markhat-Files-by-Frank-Tuttle.pdf
    • http://cefasfese.4pu.com/1730735734737736735/Skin-of-the-Soul-by-Lisa-Tuttle.pdf
    • http://cefasfese.4pu.com/3732736735739731/Passing-the-Narrows-by-Frank-Tuttle.pdf
    • http://cefasfese.4pu.com/4732735739736734/Ghosts-amp-Other-Lovers-by-Lisa-Tuttle.pdf

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