Malicious PDF — malware analysis report

Static analysis result for SHA-256 81cc8c459e4bd5d5…

MALICIOUS

PDF

16.9 KB Created: 2019-11-07 21:24:32 +00:00 Authoring application: mPDF 5.7
MD5: 768af2cff3c97c5928ca70ffe8d31e2c SHA-1: ef863665b54316526c02c1593b246bc032eeda39 SHA-256: 81cc8c459e4bd5d5ae6c02e82578070414c08534471351bf95475c25026f7c4f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that appear to be part of a link farm, disguised as book titles. This technique is often used to manipulate search engine rankings or to distribute malicious content through seemingly benign links. The ML classifier also flagged this PDF as malicious.

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/8733737732730738/Heroes-of-the-Wild-West-Wild-Bill-Hickok-by-Tania-Rice.pdf
    • http://cefasfese.4pu.com/8733737732731732/Wild-Bill-Hickok-Legend-of-the-American-Wild-West-by-Larissa-Phillips.pdf
    • http://cefasfese.4pu.com/8733736738734737/Wild-Bill-Hickok-Tames-the-West-by-Stewart-Hall-Holbrook.pdf
    • http://cefasfese.4pu.com/8733736738734733/Wild-Bill-Hickok-Gunfighter-An-Account-of-Hickok-s-Gunfights-by-Joseph-G-Rosa.pdf
    • http://cefasfese.4pu.com/9739735732736737/Science-Fiction-Westerns-The-Adventures-of-Brisco-County-Jr-the-Wild-Wild-West-Jonah-Hex-Weird-West-Wild-West-C-O-W--Boys-of-Moo-Mesa-by-Source-Wikipedia.pdf
    • http://cefasfese.4pu.com/8733737730731737/Wild-Bill-Hickok-by-B-Marvis.pdf
    • http://cefasfese.4pu.com/8733736739733736/Wild-Bill-Hickok-by-Maryann-N-Weidt.pdf
    • http://cefasfese.4pu.com/8733736738734736/Wild-Bill-Hickok-by-Richard-O-39-Connor.pdf
    • http://cefasfese.4pu.com/8733737730730739/Wild-Bill-Hickok-by-Edward-Knight.pdf
    • http://cefasfese.4pu.com/8733737732730732/The-Further-Adventures-of-Wild-Bill-Hickok-by-Robert-J-Randisi.pdf
    • http://cefasfese.4pu.com/8733737730731734/The-Plainsman-Wild-Bill-Hickok-by-Frank-J-Wilstach.pdf
    • http://cefasfese.4pu.com/8733737732730733/Calamity-Jane-and-Wild-Bill-Hickok-by-Eleanor-Tremaine.pdf
    • http://cefasfese.4pu.com/2739735734733/Aces-and-Eights-The-Legend-of-Wild-Bill-Hickok-by-Loren-D-Estleman.pdf
    • http://cefasfese.4pu.com/8733737730731733/The-Story-of-Wild-Bill-Hickok-by-Charles-Haven-Ladd-Johnston.pdf
    • http://cefasfese.4pu.com/8733737731730731/Wild-Bill---The-Story-of-James-Butler-Hickok-by-Donald-J-Aday.pdf
    • http://cefasfese.4pu.com/8733737730730732/Wild-Bill-Hickok-and-the-Wrath-of-the-Dead-Rabbits-by-James-MIC-Regan.pdf
    • http://cefasfese.4pu.com/8733737731730730/History-for-Kids-The-Illustrated-Life-of-Wild-Bill-Hickok-by-Charles-River-Editors.pdf
    • http://cefasfese.4pu.com/2739733738739/The-Real-Wild-West-The-101-Ranch-and-the-Creation-of-the-American-West-by-Michael-Wallis.pdf
    • http://cefasfese.4pu.com/3735730738733734/Wild-Land-Wild-Love-Australian-Trilogy-2-by-Connie-Mason.pdf
    • http://cefasfese.4pu.com/1736733739/Dark-Wild-Night-Wild-Seasons-3-by-Christina-Lauren.pdf

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