Malicious PDF — malware analysis report

Static analysis result for SHA-256 1648869b3b120759…

MALICIOUS

PDF

16.7 KB Created: 2019-05-02 00:53:06 +01:00 Authoring application: mPDF 5.7
MD5: 5e4ed3a20cb3326b95d3444ef047a8d2 SHA-1: 5f2acc9a7f84829a8b29248ae7e556de9b5c7ef3 SHA-256: 1648869b3b120759d063e94105f462483d42cb471aae3c65412bcd50a5baf686
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. The primary function appears to be distributing these links, which are likely used for SEO poisoning or to redirect users to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://loaminoo.linkpc.net/5094090091095099/Gray-Justice-Tom-Gray-1-by-Alan-McDermott.pdf
    • http://loaminoo.linkpc.net/6097099094096090/Gray-Salvation-Tom-Gray-6-by-Alan-McDermott.pdf
    • http://loaminoo.linkpc.net/6097099094096091/Gray-Vengeance-Tom-Gray-5-by-Alan-McDermott.pdf
    • http://loaminoo.linkpc.net/3095098095092097/Gray-Resurrection-Tom-Gray-2-by-Alan-McDermott.pdf
    • http://loaminoo.linkpc.net/4099099094091095/Bus-Ride-To-Justice-by-Fred-D-Gray.pdf
    • http://loaminoo.linkpc.net/6097096094099096/The-Portrait-of-Dorian-Gray-Teacher-s-Book-by-Elizabeth-Gray.pdf
    • http://loaminoo.linkpc.net/4095097097099096/Brothers-Blue-and-Gray-by-Ellen-Gray-Massey.pdf
    • http://loaminoo.linkpc.net/4091097098091094/Gray-Rabbit-s-123-by-Alan-Baker.pdf
    • http://loaminoo.linkpc.net/1097094092097093/The-Legendary-Life-of-Bee-Ho-Gray-by-Clark-Gray.pdf
    • http://loaminoo.linkpc.net/2092094097095094/Justice-in-Blue-and-Gray-A-Legal-History-of-the-Civil-War-by-Stephen-C-Neff.pdf
    • http://loaminoo.linkpc.net/6097099094097099/Gray-Part-II-Gray-2-by-Lou-Cadle.pdf
    • http://loaminoo.linkpc.net/2093097092091090/Gray-s-Anatomy-by-Henry-Gray.pdf
    • http://loaminoo.linkpc.net/7099094096099/D-Gray-man-Vol-2-D-Gray-man-2-by-Katsura-Hoshino.pdf
    • http://loaminoo.linkpc.net/5092095094098/The-Gray-Man-Gray-Man-1-by-Mark-Greaney.pdf
    • http://loaminoo.linkpc.net/3098095092096/D-Gray-man-Vol-1-D-Gray-man-1-by-Katsura-Hoshino.pdf
    • http://loaminoo.linkpc.net/2098098099099095/D-Gray-man-Vol-3-D-Gray-man-3-by-Katsura-Hoshino.pdf
    • http://loaminoo.linkpc.net/4098092097091091/Mabel-Gray-and-the-Wizard-Who-Swallowed-the-Sun-The-Mabel-Gray-Adventures-1-by-Clayton-Smith.pdf
    • http://loaminoo.linkpc.net/2099091099099094/The-Wolf-of-Dorian-Gray-A-Werewolf-Spawned-by-the-Evil-of-Man-The-Wolf-of-Dorian-Gray-Series-Book-1-by-Brian-S-Ference.pdf
    • http://loaminoo.linkpc.net/2090096090090097/Gray-Back-Bad-Bear-Gray-Back-Bears-1-by-T-S-Joyce.pdf
    • http://loaminoo.linkpc.net/8099096099095098/The-Pictures-of-Dorian-Gray-Includes-Both-the-20-Chapter-and-13-Chapter-Versions-of-The-Picture-of-Dorian-Gray-by-Oscar-Wilde.pdf

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