Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3a107b647d2969…

MALICIOUS

PDF

17.0 KB Created: 2019-11-07 21:42:17 +00:00 Authoring application: mPDF 5.7
MD5: 28c46db7872212bf012dc4ac9f85177f SHA-1: ae1f4efd55b18fb965d2e2b3a22258ec1d0f3d3a SHA-256: 7f3a107b647d29690adf6423cbe46fb6c7f2b95d0cbe9a812a814e16270feb2b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier. The critical heuristic 'PDF_SEO_LINK_FARM' indicates the presence of a large number of external links, likely for SEO manipulation or to distribute further malicious content. The document body confirms the presence of numerous URLs pointing to PDF files hosted on the same domain, suggesting a link farm or redirection scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7477725-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7477725-0
  • 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/1736730737730/The-Firmament-of-Time-by-Loren-Eiseley.pdf
    • http://cefasfese.4pu.com/6731737733730736/The-First-Time-Manager-by-Loren-B-Belker.pdf
    • http://cefasfese.4pu.com/3733732737735736/Good-Time-Boys-Good-Time-Boys-1-4-by-Carol-Lynne.pdf
    • http://cefasfese.4pu.com/3732733732737733/All-In-Good-Time-by-Edward-Ormondroyd.pdf
    • http://cefasfese.4pu.com/2732734738739735/One-Last-Good-Time-by-Michael-Kardos.pdf
    • http://cefasfese.4pu.com/6734732736737731/In-Good-Time-by-Aqua-Allsopp.pdf
    • http://cefasfese.4pu.com/8736737733/It-Seemed-Like-a-Good-Idea-at-the-Time-by-Kylie-Scott.pdf
    • http://cefasfese.4pu.com/2733736730733739/A-Fairly-Good-Time-by-Mavis-Gallant.pdf
    • http://cefasfese.4pu.com/3739736736734733/Too-Good-to-Be-True-So-Little-Time-3-by-Nancy-Butcher.pdf
    • http://cefasfese.4pu.com/5734732732731/All-in-Good-Time-The-Gilded-Legacy-2-by-Maureen-Lang.pdf
    • http://cefasfese.4pu.com/2739735731739732/Harebrained-It-seemed-like-a-good-idea-at-the-time-by-Meg-Myers-Morgan.pdf
    • http://cefasfese.4pu.com/1730732738738738736/The-Faces-Had-Me-A-Real-Good-Time-by-Andy-Neill.pdf
    • http://cefasfese.4pu.com/2732737731731734/Time-Off-for-Good-Behavior-by-Lani-Diane-Rich.pdf
    • http://cefasfese.4pu.com/1731730732735735737/Once-Upon-a-Real-Good-Time-Heartbreakers-1-by-Lauren-Blakely.pdf
    • http://cefasfese.4pu.com/1732733731730/Good-Time-Girl-Rodeo-Cowboys-1-by-Candace-Schuler.pdf
    • http://cefasfese.4pu.com/4732737735730736/Sesame-Street-Cookie-Monster-s-Good-Time-to-Eat-by-Richard-Brown.pdf
    • http://cefasfese.4pu.com/6731732732/Sex-amp-Rage-Advice-to-Young-Ladies-Eager-for-a-Good-Time-by-Eve-Babitz.pdf
    • http://cefasfese.4pu.com/2731734734734733/A-Crystal-of-Time-The-School-for-Good-and-Evil-The-Camelot-Years-2-by-Soman-Chainani.pdf
    • http://cefasfese.4pu.com/6739739731733730/Recipes-For-A-Good-Time-Stories-Food-and-Cocktails-from-Bodega-Porteno-and-Gardel-s-Bar-by-Ben-Milgate.pdf
    • http://cefasfese.4pu.com/3736739731734734/Good-Time-Girls-of-the-Alaska-Yukon-Gold-Rush-A-Secret-History-of-the-Far-North-by-Lael-Morgan.pdf

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