Malicious PDF — malware analysis report

Static analysis result for SHA-256 b84cfc46a7d468b6…

MALICIOUS

PDF

13.1 KB Created: 2020-03-18 11:03:51 +00:00 Authoring application: mPDF 5.7
MD5: c8a8826bc2ff9c0395e0a8265d0b990d SHA-1: 4f8cad19ffac382616b6b851b10beab70aac4a1b SHA-256: b84cfc46a7d468b6cf65f1114d287742a9b53d4c9f64967c0e0165a8e5a56490
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to a single domain, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The embedded URLs are likely used for SEO poisoning or to drive traffic to malicious content, rather than directly delivering a payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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://ieuicufioao.myhome.cx/5550551552559556/Rabbit-Run-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/3551556559555554/Couples-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/1555558553554/Bech-A-Book-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/3552558553559558/The-Witches-of-Eastwick-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/2551556550559/Still-Looking-Essays-on-American-Art-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/2555559559556556/Rabbit-Redux-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/3552557555550559/The-Witches-of-Eastwick-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/2555559558555558/Rabbit-At-Rest-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/3559559554553552/After-the-Coup-Old-Man-s-War-4-5-by-John-Scalzi.pdf
    • http://ieuicufioao.myhome.cx/1556550555554/Pigeon-Feathers-and-Other-Stories-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/3557550558559550/The-Complete-Henry-Bech-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/4554555558550555/The-Best-American-Short-Stories-1984-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/1550559555552553552/Higher-Gossip-Essays-and-Criticism-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/1551550555552550/The-Witches-of-Eastwick-Eastwick-1-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/4557558553554/Rabbit-Omnibus-Rabbit-Run-Rabbit-Redux-Rabbit-Is-Rich-by-John-Updike.pdf
    • http://ieuicufioao.myhome.cx/1559555558559556/Updike-by-Adam-Begley.pdf
    • http://ieuicufioao.myhome.cx/7555550553556555/Coup-de-Pub-Van-In-10-by-Pieter-Aspe.pdf
    • http://ieuicufioao.myhome.cx/1553559552553553/Coup-de-Gr-ce-by-Marguerite-Yourcenar.pdf
    • http://ieuicufioao.myhome.cx/1550551559557551550/The-Tuareg-Revolt-and-the-Mali-Coup-by-U-S-Congress.pdf
    • http://ieuicufioao.myhome.cx/4551555555558552/The-Alcatraz-Coup-Red-Dog-Conspiracy-0-by-Patricia-Loofbourrow.pdf
    • http://ieuicufioao.myhome.cx/4557558553554/Rabbit-Omnibus

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