Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3502a163dc07c01…

MALICIOUS

PDF

15.3 KB Created: 2019-05-01 20:41:46 +01:00 Authoring application: mPDF 5.7
MD5: b4fb93987ffb4aa556a5644ed16c9907 SHA-1: 0045ef825b1ffa9828e406c7d685fc7a63f53d7a SHA-256: d3502a163dc07c010124b6f7b597927d78412d35eb3ea9f7378ac507c79083ee
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a link farm with 22 external links, predominantly to book-related PDFs hosted on loaminoo.linkpc.net. This heuristic suggests a social engineering tactic to drive traffic to potentially malicious content. No scripts were extracted from this sample. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/7098098091096092/The-Gothic-Worlds-of-Peter-Straub-by-John-C-Tibbetts.pdf
    • http://loaminoo.linkpc.net/3098095098096/The-Gothic-Imagination-Conversations-on-Fantasy-Horror-and-Science-Fiction-in-the-Media-by-John-C-Tibbetts.pdf
    • http://loaminoo.linkpc.net/7098098091095098/The-Horror-Writers-Association-Presents-Peter-Straub-s-Ghosts-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/7098098092095097/Peter-Straub-3-Vol-Boxed-Set-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/4091098094091097/The-Throat-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/1099094092091094/Julia-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2099098090090097/Shadowland-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/3097099091090096/Julia-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2096092097094/The-Throat-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2095099092092/Koko-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2091092094094094/The-Hellfire-Club-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2091093094098095/Ghost-Story-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/6094093093095098/Perdido-A-Fragment-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/7098098091096094/Blue-Rose-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/4090097097095095/Poe-s-Children-The-New-Horror-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2093095091091097/A-Dark-Matter-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/7098098092096099/Leeson-Park-and-Belsize-Square-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/7098098091099097/The-Juniper-Tree-and-Other-Blue-Rose-Stories-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2095098094090/American-Fantastic-Tales-Terror-and-the-Uncanny-from-Poe-to-the-Pulps-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/7098098091099096/American-Fantastic-Tales-Terror-and-the-Uncanny-from-Poe-to-Now-A-two-volume-Library-of-America-boxed-set-by-Peter-Straub.pdf
    • http://loaminoo.linkpc.net/2099098090090097/S