Malicious PDF — malware analysis report

Static analysis result for SHA-256 55cae3fbf808014f…

MALICIOUS

PDF

17.4 KB Created: 2019-11-07 23:37:56 +00:00 Authoring application: mPDF 5.7
MD5: b0e87c847e77322716974a0615a0e6d3 SHA-1: fabf24842cebaf0c6e4401e63cd154fde5379f36 SHA-256: 55cae3fbf808014fe4ea968dce703bb837765a16277993765cb8c4961922a33e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded URLs, forming a link farm. The primary heuristic indicates this is a PDF SEO link farm, suggesting the document's purpose is to redirect users to external content. While the specific content of the linked PDFs are benign, the sheer volume and structure of the links point to a malicious intent, likely to drive traffic or potentially serve as a distribution point for further malicious content. No scripts were extracted from this sample.

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/4730738738733735/Maps-to-the-Other-Side-Adventures-of-a-Bipolar-Cartographer-by-Sascha-Altman-DuBrul.pdf
    • http://cefasfese.4pu.com/5730734739739736/Beating-Bipolar-The-Tools-to-Treat-Bipolar-by-Blake-LeVine.pdf
    • http://cefasfese.4pu.com/1731733730734731738/Adventures-Around-the-Globe-Packed-Full-of-Maps-Activities-and-Over-250-Stickers-by-Lonely-Planet-Kids.pdf
    • http://cefasfese.4pu.com/1734739732734733/The-Cartographer-of-No-Man-s-Land-by-P-S-Duffy.pdf
    • http://cefasfese.4pu.com/1739731737737739/A-Mapmaker-s-Dream-The-Meditations-of-Fra-Mauro-Cartographer-to-the-Court-of-Venice-by-James-Cowan.pdf
    • http://cefasfese.4pu.com/8735737730731732/Death-in-the-Foyer-by-David-R-Altman.pdf
    • http://cefasfese.4pu.com/2738739735730/Innocent-Strangers-by-Millys-Altman.pdf
    • http://cefasfese.4pu.com/3739739737739730/A-Gathering-of-Spies-by-John-Altman.pdf
    • http://cefasfese.4pu.com/5738736734738739/Development-Cran-Nerve-Ganglia-by-Joseph-Altman.pdf
    • http://cefasfese.4pu.com/1730739731732732733/Wilma-Rudolph-Run-for-Glory-by-Linda-Jacobs-Altman.pdf
    • http://cefasfese.4pu.com/7733734734738736/Peloponnese-terrain-maps-by-Terrain-Maps.pdf
    • http://cefasfese.4pu.com/2733738736730738/Thanks-for-Coming-One-Young-Woman-s-Quest-for-an-Orgasm-by-Mara-Altman.pdf
    • http://cefasfese.4pu.com/2732731736731735/Side-by-Side-Parallel-Histories-of-Israel-Palestine-by-Sami-Adwan.pdf
    • http://cefasfese.4pu.com/5731737739731734/Claiming-Abraham-Reading-the-Bible-and-the-Qur-an-Side-by-Side-by-Michael-E-Lodahl.pdf
    • http://cefasfese.4pu.com/6732730733734734/Jesus-and-Muhammad-Their-Messages-Side-by-Side-by-Louis-St-Michael.pdf
    • http://cefasfese.4pu.com/2738732730733735/The-Ballad-of-Gregoire-Darcy-Jane-Austen-s-Pride-and-Prejudice-Continues-by-Marsha-Altman.pdf
    • http://cefasfese.4pu.com/9738733730/Bipolar-Cowboy-by-Noah-Cicero.pdf
    • http://cefasfese.4pu.com/3737738737730734/Diary-of-a-Bipolar-by-George-Ison.pdf
    • http://cefasfese.4pu.com/7731734730738733/Bipolar-Disorder-for-Dummies-by-Candida-Fink.pdf
    • http://cefasfese.4pu.com/4737735738737733/Bipolar-1-Disorder-How-to-Survive-and-Thrive-by-Molly-McHugh.pdf
    • http://cefasfese.4pu.com/5738736734738739/Development-Cran-Nerve-Ganglia-by-Joseph-Altma

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