Malicious PDF — malware analysis report

Static analysis result for SHA-256 235ad17a32ce0c35…

MALICIOUS

PDF

17.4 KB Created: 2019-05-01 18:23:32 +01:00 Authoring application: mPDF 5.7
MD5: e161410953dc2215b559972ae067f5e1 SHA-1: d9142c58bf7c51bb2b44566fc21b3c2360a9abfe SHA-256: 235ad17a32ce0c3573818424926cb90fe1290432e34c3d2cb7979b40f4f6b76c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, identified as a link farm, which is a common technique for SEO poisoning and distributing malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to click on these links, likely leading to further compromise. 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/2099094097090095/Everything-Is-Lies-by-Helen-Callaghan.pdf
    • http://loaminoo.linkpc.net/3092096093095094/Dear-George-And-Other-Stories-by-Helen-Simpson.pdf
    • http://loaminoo.linkpc.net/2093096093090092/More-Joy-in-Heaven-by-Morley-Callaghan.pdf
    • http://loaminoo.linkpc.net/1097092092097090/First-and-Only-Callaghan-Brothers-2-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/4094095096092094/Lost-in-Paris-by-Cindy-Callaghan.pdf
    • http://loaminoo.linkpc.net/6099097098091097/Dear-Russell-Dear-Jourdain-A-Commentary-on-Russell-s-Logic-Based-on-His-Correspondence-with-Philip-Jourdain-by-Ivor-Grattan-Guinness.pdf
    • http://loaminoo.linkpc.net/4098090092091090/Between-Cases-Callaghan-Green-4-by-Annie-Dyer.pdf
    • http://loaminoo.linkpc.net/3092099093099097/Seeking-Vengeance-Callaghan-Brothers-4-by-Abbie-Zanders.pdf
    • http://loaminoo.linkpc.net/7098095091099096/Engagement-Rate-Callaghan-Green-1-by-Annie-Dyer.pdf
    • http://loaminoo.linkpc.net/3098095094096095/The-Red-Book-The-Hanrahan-Case-Against-Merck-Sharp-and-Dohme-by-Jerry-O-39-Callaghan.pdf
    • http://loaminoo.linkpc.net/8093094094090090/Rajani-Palme-Dutt-A-Study-in-British-Stalinism-by-John-Callaghan.pdf
    • http://loaminoo.linkpc.net/3099095093096092/Alfonso-X-and-the-Cantigas-de-Santa-Maria-A-Poetic-Biography-by-Joseph-F-O-39-Callaghan.pdf
    • http://loaminoo.linkpc.net/5094097096095091/Enter-Helen-The-Invention-of-Helen-Gurley-Brown-and-the-Rise-of-the-Modern-Single-Woman-by-Brooke-Hauser.pdf
    • http://loaminoo.linkpc.net/1094098093091095/Dear-Rockstar-Dear-Rockstar-1-by-Emme-Rollins.pdf
    • http://loaminoo.linkpc.net/3097097092095093/Dear-Rockstar-Dear-Rockstar-1-by-Emme-Rollins.pdf
    • http://loaminoo.linkpc.net/1090090096094097/My-Dear-I-Wanted-to-Tell-You-My-Dear-I-Wanted-to-Tell-You-1-by-Louisa-Young.pdf
    • http://loaminoo.linkpc.net/8092094099090098/Starboard-Secrets-Cruise-Ship-Christian-Cozy-Mysteries-1-by-Hope-Callaghan.pdf
    • http://loaminoo.linkpc.net/3095094095099098/The-Good-Life-Helen-and-Scott-Nearing-s-Sixty-Years-of-Self-Sufficient-Living-by-Helen-Nearing.pdf
    • http://loaminoo.linkpc.net/2095095093094098/Lady-Helen-and-the-Dark-Days-Club-Lady-Helen-1-by-Alison-Goodman.pdf
    • http://loaminoo.linkpc.net/3099095090094098/Answer-Me-This-by-Helen-Zaltzman-Olly-Mann-by-Helen-Zaltzman.pdf
    • http://loaminoo.linkpc.net/7098095091099096/Engagement-R

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