Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe49cdbeefbd50b6…

MALICIOUS

PDF

20.5 KB Created: 2019-11-07 16:09:12 +00:00 Authoring application: mPDF 5.7
MD5: b02c6d12a10ad35dfb5971498b7f777c SHA-1: aa801600bb2c0d5b305f48fa64e3e2c45c9d31ae SHA-256: fe49cdbeefbd50b6b9ea41b87ea7d58ca81d8c78db8c44e1437c1b53c56b6b35
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the PDF structure and link farm heuristic indicate a malicious intent to distribute or redirect. The primary IOCs are the numerous URLs found within the document body.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/5738736735737737/Promises-to-Keep-A-British-Vet-in-Africa-by-Hugh-Cran.pdf
    • http://cefasfese.4pu.com/2735738730735734/Plain-Tales-from-the-British-Empire-Images-of-the-British-in-India-Africa-and-South-East-Asia-by-Charles-Allen.pdf
    • http://cefasfese.4pu.com/8736734730739738/The-Great-Big-British-Joke-Book-1000-Jokes-Puns-Gags-and-One-Liners-by-Hugh-Murr.pdf
    • http://cefasfese.4pu.com/2733732731731739/Passionate-Promises-Nine-Promises-to-Stir-Your-Passion-An-Embracing-Romance-Anthology-Book-1-by-Victoria-Vane.pdf
    • http://cefasfese.4pu.com/7737737731730737/Breathless-Promises-Alluring-Promises-3-by-Josie-Bordeaux.pdf
    • http://cefasfese.4pu.com/7732731731736/Promises-Linger-Promises-1-by-Sarah-McCarty.pdf
    • http://cefasfese.4pu.com/4731731732734733/Promises-Hurt-Promises-1-by-Elle-Brooks.pdf
    • http://cefasfese.4pu.com/4736732731730734/Forgotten-Promises-Promises-2-by-Elle-Brooks.pdf
    • http://cefasfese.4pu.com/4736737734734736/Promises-Hurt-Promises-1-by-Elle-Brooks.pdf
    • http://cefasfese.4pu.com/4731738739736735/Promises-Linger-Promises-1-by-Sarah-McCarty.pdf
    • http://cefasfese.4pu.com/3739736737735738/Promises-Decide-Promises-5-by-Sarah-McCarty.pdf
    • http://cefasfese.4pu.com/1737730730732732/Promises-Reveal-Promises-4-by-Sarah-McCarty.pdf
    • http://cefasfese.4pu.com/5737738731738737/That-s-a-Promise-Promises-Promises-1-by-Victoria-Klahr.pdf
    • http://cefasfese.4pu.com/3732733733731735/Today-s-Promises-Promises-2-by-S-R-Grey.pdf
    • http://cefasfese.4pu.com/5731735739735733/Military-Identities-The-Regimental-System-the-British-Army-and-the-British-People-C-1870-2000-by-David-French.pdf
    • http://cefasfese.4pu.com/9737730736737731/Africa-Unchained-The-Blueprint-for-Africa-s-Future-by-George-B-N-Ayittey.pdf
    • http://cefasfese.4pu.com/8739735732736/Hugh-Johnson-s-Wine-Companion-The-Encyclopedia-of-Wines-Vineyards-and-Winemakers-by-Hugh-Johnson.pdf
    • http://cefasfese.4pu.com/4735734738733731/Promises-Promises-by-L--J-Baker.pdf
    • http://cefasfese.4pu.com/3738735736739735/The-Oxford-History-of-the-British-Empire-Volume-I-The-Origins-of-Empire-British-Overseas-Enterprise-to-the-Close-of-the-Seventeenth-Century-Vol-1-by-Nicholas-Canny.pdf
    • http://cefasfese.4pu.com/1730730730734738737/Illustrations-of-Typical-Specimens-of-Coleoptera-in-the-Collection-of-the-British-Museum-Part-1-Lycida-Volume-PT-1-by-British-Museum-Natural-History-Department.pdf

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