Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c66e2206335697…

MALICIOUS

PDF

17.8 KB Created: 2019-11-07 13:39:01 +00:00 Authoring application: mPDF 5.7
MD5: 47edbb4358bfe13a361c0b521d2722f9 SHA-1: 7dfdc702c141f6e1c4b0498ce795e5be6fb1de99 SHA-256: 63c66e2206335697ef3fb1d6c7194c73e3214a7666ccd58ca8a37b97c0a4429e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to a single domain, suggesting a link farm or SEO poisoning attempt. While the ML classifier flagged it as malicious, the specific URLs themselves are currently classified as benign. The attack pattern likely involves directing users to a large collection of documents hosted on a suspicious domain, potentially as a lure or to manipulate search engine results.

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/8738731733733/Lang-Lang-Wo-Yong-Gang-Qin-Gai-Bian-Shi-Jie-Journey-Of-A-Thousand-Miles-My-Story-by-Lang-Lang.pdf
    • http://cefasfese.4pu.com/1730737733735739734/Halloween-Maskerade-Party-by-Annie-Lang.pdf
    • http://cefasfese.4pu.com/6732736733736734/Journey-of-a-Thousand-Miles-My-Story-by-Lang-Lang.pdf
    • http://cefasfese.4pu.com/5732736732737739/Annie-s-Verdict-Michael-Gresham-7-Annie-the-Profiler-1-by-John-Ellsworth.pdf
    • http://cefasfese.4pu.com/1730735730739736/Top-Shelf-Five-for-Fighting-4-by-Amber-Lynn.pdf
    • http://cefasfese.4pu.com/7739735733730739/The-Shelf-Elf-by-Jackie-Mims-Hopkins.pdf
    • http://cefasfese.4pu.com/3733739730736736/Elf-on-the-Shelf---a-Christmas-Tradition-by-Carol-V-Aebersold.pdf
    • http://cefasfese.4pu.com/1731738734735734734/Villains-amp-Vodka-Top-Shelf-2-by-Alta-Hensley.pdf
    • http://cefasfese.4pu.com/7731736737734734/Bastards-amp-Whiskey-Top-Shelf-1-by-Alta-Hensley.pdf
    • http://cefasfese.4pu.com/1734733733736730/Annie-Duke-How-I-Raised-Folded-Bluffed-Flirted-Cursed-and-Won-Millions-at-the-World-Series-of-Poker-by-Annie-Duke.pdf
    • http://cefasfese.4pu.com/3730736731739735/Three-by-Annie-Dillard-Pilgrim-at-Tinker-Creek-An-American-Childhood-The-Writing-Life-by-Annie-Dillard.pdf
    • http://cefasfese.4pu.com/4738738733737/Annie-Annie-by-Molly-Cone.pdf
    • http://cefasfese.4pu.com/5734735737738730/Microfossils-From-Recent-And-Fossil-Shelf-Seas-by-M-D-Brasier.pdf
    • http://cefasfese.4pu.com/2734736736730730/Shelf-Life-Crestlane-County-1-by-Stephanie-Lawton.pdf
    • http://cefasfese.4pu.com/2739738730734735/The-Shelf-From-LEQ-to-LES-Adventures-in-Extreme-Reading-by-Phyllis-Rose.pdf
    • http://cefasfese.4pu.com/4736739736730730/Murder-on-the-Half-Shelf-Booktown-Mystery-6-by-Lorna-Barrett.pdf
    • http://cefasfese.4pu.com/3738731733738738/Shelf-Life-Fantastic-Stories-Celebrating-Bookstores-by-Greg-Ketter.pdf
    • http://cefasfese.4pu.com/1734733736736735/Shelf-Discovery-The-Teen-Classics-We-Never-Stopped-Reading-by-Lizzie-Skurnick.pdf
    • http://cefasfese.4pu.com/5734735739736735/Microfossils-from-Recent-and-Fossil-Shelf-Seas-by-John-William-Neale.pdf
    • http://cefasfese.4pu.com/9734731736739731/Harvard-Classics-Shelf-of-Fiction-Vol-18-Crime-and-Punishment-by-Fyodor-Dostoyevsky.pdf