Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0dcd67696d81e2…

MALICIOUS

PDF

15.5 KB Created: 2019-06-04 09:59:43 +01:00 Authoring application: mPDF 5.7
MD5: 00398e4dbda83a159e72cd6ac561a589 SHA-1: d74253211dc69d0fa6b091e50cb0b840c25530c3 SHA-256: 9c0dcd67696d81e266b1cc2f3c5682762db6b2b6aa0edba3662a036170a354bf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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
    • http://cefasfese.4pu.com/1731733735737737730/Kicking-the-Habit-and-Other-Stories-by-Steven-Saus.pdf
    • http://cefasfese.4pu.com/3731734736730/Tempest-in-the-Tea-Leaves-A-Fortune-Teller-Mystery-1-by-Kari-Lee-Townsend.pdf
    • http://cefasfese.4pu.com/2734733733737733/Corpse-in-the-Crystal-Ball-Fortune-Teller-Mystery-2-by-Kari-Lee-Townsend.pdf
    • http://cefasfese.4pu.com/8733734737732733/Superhuman-by-Habit-A-Guide-to-Becoming-the-Best-Possible-Version-of-Yourself-One-Tiny-Habit-at-a-Time-by-Tynan.pdf
    • http://cefasfese.4pu.com/2730736738730734/Kicking-the-Sky-by-Anthony-De-Sa.pdf
    • http://cefasfese.4pu.com/1731733735736735738/Kicking-Reality-by-Kat-T-Masen.pdf
    • http://cefasfese.4pu.com/2733739734736735/Why-It-s-Kicking-Off-Everywhere-The-New-Global-Revolutions-by-Paul-Mason.pdf
    • http://cefasfese.4pu.com/8736733738732/Kicking-It-Alex-Craft-2-5-Chicagoland-Vampires-8-25-by-Faith-Hunter.pdf
    • http://cefasfese.4pu.com/2738736730731736/Kicking-Dreaming-A-Story-of-Heart-Soul-and-Rock-and-Roll-by-Ann-Wilson.pdf
    • http://cefasfese.4pu.com/3733730732734738/Smashing-Glass-amp-Kicking-Ass-Lessons-from-The-Meanest-Woman-Alive-by-Linda-Smith.pdf
    • http://cefasfese.4pu.com/1739732733738735/In-the-Red-by-Kari-Gregg.pdf
    • http://cefasfese.4pu.com/8731735731735735/Habit-Titan-1-by-T-J-Brearton.pdf
    • http://cefasfese.4pu.com/2735730730/Make-Me-Sin-Bad-Habit-2-by-J-T-Geissinger.pdf
    • http://cefasfese.4pu.com/3737730732737733/I-Omega-by-Kari-Gregg.pdf
    • http://cefasfese.4pu.com/2735731737733737/Creatures-of-Habit-An-Illustrated-Novel-by-Tom-Fassbender.pdf
    • http://cefasfese.4pu.com/1736734738731732/On-My-Walk-by-Kari-Lynn-Winters.pdf
    • http://cefasfese.4pu.com/4733737730738733/The-Promise-of-Iceland-by-K-ri-G-slason.pdf
    • http://cefasfese.4pu.com/2735733738730739/Surrender-Her-Touch-by-Kari-Thomas.pdf
    • http://cefasfese.4pu.com/2739730731739737/The-Mind-s-Mirror-by-Kari-Hohne.pdf
    • http://cefasfese.4pu.com/4732733731736730/There-is-a-God-A-Collection-of-Christian-Poetry-by-Kari-L-Greenaway.pdf

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