Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6794ceb9e08898…

MALICIOUS

PDF

18.1 KB Created: 2019-11-28 22:27:00 +00:00 Authoring application: mPDF 5.7
MD5: 17e717a77b29e590c82bc9c4b990ff7b SHA-1: 5b7382ca300cf5f7300e045f11b91f169076993e SHA-256: 0a6794ceb9e0889807bb76a12050c9ccf8bf721d4df6174f28b27466b4726cfc
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on the 'cefasfese.4pu.com' domain. While the ML classifier flagged the PDF as malicious, the specific intent appears to be SEO manipulation or content distribution rather than direct payload delivery. The presence of numerous external links suggests a link farm or spamming operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9807

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/2732735730730739/Nobody-s-Baby-by-Carol-Burnside.pdf
    • http://cefasfese.4pu.com/2735735738731735/Her-Unexpected-Family-Sweetwater-Springs-2-by-Carol-Burnside.pdf
    • http://cefasfese.4pu.com/3732739730731738/A-Suitable-Wife-Sweetwater-Springs-1-by-Carol-Burnside.pdf
    • http://cefasfese.4pu.com/1734730731731/Nobody-s-Baby-Now-by-Carol-Lea-Benjamin.pdf
    • http://cefasfese.4pu.com/4732735732736/Baby-Island-by-Carol-Ryrie-Brink.pdf
    • http://cefasfese.4pu.com/9733731732737731/A-Baby-for-Sarah-Noah-s-Crossing-5-by-Carol-Voss.pdf
    • http://cefasfese.4pu.com/2733730732732735/The-Innocent-s-Secret-Baby-Billionaires-amp-One-Night-Heirs-1-by-Carol-Marinelli.pdf
    • http://cefasfese.4pu.com/2735737735732730/If-I-m-Diapering-a-Watermelon-Then-Where-d-I-Leave-the-Baby-Help-for-the-Highly-Distractible-Mom-by-Carol-Barnier.pdf
    • http://cefasfese.4pu.com/1733739732735731/Something-Like-Happy-by-John-Burnside.pdf
    • http://cefasfese.4pu.com/2731735734738730/The-Dumb-House-by-John-Burnside.pdf
    • http://cefasfese.4pu.com/1738739730731736/Laugh-Burnside-2-by-Mary-Ann-Rivers.pdf
    • http://cefasfese.4pu.com/1730738738736732738/Hush-Little-Baby-A-Jefferson-Winter-Thriller-0-6-The-Jefferson-Winter-Chronicles-2-by-James-Carol.pdf
    • http://cefasfese.4pu.com/2731739739734738/Post-Pattern-Burnside-Series-1-by-David-Chill.pdf
    • http://cefasfese.4pu.com/1730734738732733735/Batgirl---Die-neuen-Abenteuer-1-Willkommen-in-Burnside-by-Cameron-Stewart.pdf
    • http://cefasfese.4pu.com/1731730739731735731/Double-Pass-Burnside-Series-Book-7-by-David-Chill.pdf
    • http://cefasfese.4pu.com/5734731737731734/Baby-led-Weaning-Helping-Your-Baby-to-Love-Good-Food-by-Gill-Rapley.pdf
    • http://cefasfese.4pu.com/2731731739736732/Boarding-the-Baby-Boat---A-guide-to-the-Baby-Decision-by-Imogen-Barnacle.pdf
    • http://cefasfese.4pu.com/9734735733730734/Dawn-Schafer-Undercover-Baby-sitter-Baby-Sitters-Club-Mystery-26-by-Ann-M-Martin.pdf
    • http://cefasfese.4pu.com/9735736733735737/Real-Baby-Food-Easy-All-Natural-Recipes-for-Your-Baby-and-Toddler-by-Jenna-Helwig.pdf
    • http://cefasfese.4pu.com/1730738738731738733/From-Baby-Boom-To-Baby-Bust-How-Business-Can-Meet-The-Demographic-Challenge-by-Martin-M-Greller.pdf

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