Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c8d3b8301aaf39…

MALICIOUS

PDF

20.4 KB Created: 2019-05-02 01:17:30 +01:00 Authoring application: mPDF 5.7
MD5: 327d3332caf1ef55fcdddb3c5febe2fc SHA-1: ae5ba54935dc954541c69913944b504656e09edb SHA-256: f7c8d3b8301aaf3963bcc5ba453ea8eeb33fd98897bad0b2ccbdd700096fdb9e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external websites. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are part of this link farm. The primary attack pattern is to direct users to a large number of external sites, likely for SEO poisoning or to host further malicious content.

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://muicuiu.dumb1.com/1a01a04a05a05a07a01/For-Fhrer-and-Fatherland-SS-Murder-and-Mayhem-in-Wartime-Britain-by-Roderick-De-Normann.pdf
    • http://muicuiu.dumb1.com/4a04a03a09a04a00/Remember-Me-A-Search-for-Refuge-in-Wartime-Britain-by-Irene-N-Watts.pdf
    • http://muicuiu.dumb1.com/4a02a04a06a04a09/Murder-amp-Mayhem-on-Staten-Island-by-Patricia-M-Salmon.pdf
    • http://muicuiu.dumb1.com/2a02a04a01a09a01/Tramps-and-Thieves-Murder-and-Mayhem-2-by-Rhys-Ford.pdf
    • http://muicuiu.dumb1.com/9a07a03a09a03a02/Martinis-amp-Mayhem-Murder-She-Wrote-5-by-Jessica-Fletcher.pdf
    • http://muicuiu.dumb1.com/1a00a04a05a09a05a05/Dire-Strait-Murder-Mayhem-and-Skulduggery-by-Tony-Blackman.pdf
    • http://muicuiu.dumb1.com/1a06a03a05a08a04/When-the-Mob-Ran-Vegas-Stories-of-Money-Mayhem-and-Murder-by-Steve-Fischer.pdf
    • http://muicuiu.dumb1.com/2a05a08a00a07a01/Murder-at-Dusk-How-US-soldier-and-smiling-psychopath-Eddie-Leonski-terrorised-wartime-Melbourne-by-Ian-W-Shaw.pdf
    • http://muicuiu.dumb1.com/7a00a04a08a04a00/A-Spot-of-Folly-Ten-and-a-Quarter-New-Tales-of-Murder-and-Mayhem-by-Ruth-Rendell.pdf
    • http://muicuiu.dumb1.com/2a06a04a04a06a01/Murder-Mystery-amp-Dating-Mayhem-The-Gray-Haired-Knitting-Detectives-Book-1-by-D-E-Haggerty.pdf
    • http://muicuiu.dumb1.com/4a09a04a04a00a05/Captured-by-Pirates-22-Firsthand-Accounts-of-Murder-amp-Mayhem-on-the-High-Seas-by-John-Richard-Stephens.pdf
    • http://muicuiu.dumb1.com/6a02a07a07a06a01/Mayhem-s-Children-Mayhem-Wave-3-by-Edward-Aubry.pdf
    • http://muicuiu.dumb1.com/6a04a08a08a02a00/Mayhem-s-Warrior-Operation-Mayhem-1-by-Lindsay-Cross.pdf
    • http://muicuiu.dumb1.com/3a05a09a08a03a02/Sons-of-Mayhem-2-Blood-and-Whisky-Sons-of-Mayhem-1-2-by-Nikki-Pink.pdf
    • http://muicuiu.dumb1.com/2a03a02a03a08a08/A-History-of-Britain-The-Key-Events-That-Have-Shaped-Britain-from-Neolithic-Times-to-the-21st-Century-by-Richard-Dargie.pdf
    • http://muicuiu.dumb1.com/1a01a04a05a05a07a03/Victorian-Eureka-amp-Ferndale-by-Bob-Von-Normann.pdf
    • http://muicuiu.dumb1.com/1a01a04a05a04a06a03/Recursion-On-The-Countable-Functionals-by-Dag-Normann.pdf
    • http://muicuiu.dumb1.com/1a01a04a05a03a05a00/Recursion-on-the-Countable-Functionals-by-D-Normann.pdf
    • http://muicuiu.dumb1.com/8a08a08a01a07a05/R-digers-Comeback-by-Gerd-Normann.pdf
    • http://muicuiu.dumb1.com/3a08a03a03a05a00/A-History-of-Britain-The-Wars-of-the-British-1603-1776-A-History-of-Britain-2-by-Simon-Schama.pdf
    • http://muicuiu.dumb1.com/2a05a08a00a07a01/Murder-at-Dusk-How-US-soldier-and-smiling-psychopath-Eddie-Leonski-terrorised-wartim