Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1676905cf9cee8b…

MALICIOUS

PDF

19.4 KB Created: 2019-05-02 17:23:27 +01:00 Authoring application: mPDF 5.7
MD5: d5e4e096649990650d06741d396ec6c9 SHA-1: 3c0480c553e0518ebdd5ff390957f8aa524d2a12 SHA-256: a1676905cf9cee8bb0303a4a9894d2aa7027b7030fb70882c2f6ae6d890cecea
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links pointing to external PDF documents, hosted on a dynamic DNS domain. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious or deceptive content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1097093094097094/All-Standing-The-Remarkable-Story-of-the-Jeanie-Johnston-The-Legendary-Irish-Famine-Ship-by-Kathryn-Miles.pdf
    • http://loaminoo.linkpc.net/2098092097091091/The-Irish-Famine-A-Documentary-by-Colm-T-ib-n.pdf
    • http://loaminoo.linkpc.net/3098095091090093/The-Famine-Ships-The-Irish-Exodus-to-America-by-Edward-Laxton.pdf
    • http://loaminoo.linkpc.net/2090098096097093/The-Graves-Are-Walking-The-Great-Famine-and-the-Saga-of-the-Irish-People-by-John-Kelly.pdf
    • http://loaminoo.linkpc.net/7099091099099096/Receiving-Erin-s-Children-Philadelphia-Liverpool-and-the-Irish-Famine-Migration-1845-1855-by-Ann-Carney.pdf
    • http://loaminoo.linkpc.net/7099091098092099/Receiving-Erin-s-Children-Philadelphia-Liverpool-and-the-Irish-Famine-Migration-1845-1855-by-J-Matthew-Gallman.pdf
    • http://loaminoo.linkpc.net/3093091095091090/How-Many-Miles-to-Babylon-by-Jennifer-Johnston.pdf
    • http://loaminoo.linkpc.net/1091098097097090/Superstorm-Nine-Days-Inside-Hurricane-Sandy-by-Kathryn-Miles.pdf
    • http://loaminoo.linkpc.net/3092099095095091/Last-Rancher-Standing-The-Cliven-Bundy-Story-a-Close-up-View-by-Shawna-Cox.pdf
    • http://loaminoo.linkpc.net/3091092093094094/The-Quilt-Story-by-Tony-Johnston.pdf
    • http://loaminoo.linkpc.net/5090094098091094/American-Pharoah-The-Untold-Story-of-the-Triple-Crown-Winner-s-Legendary-Rise-by-Joe-Drape.pdf
    • http://loaminoo.linkpc.net/2095099096095092/The-Story-of-Owen-Dragon-Slayer-of-Trondheim-The-Story-of-Owen-1-by-E-K-Johnston.pdf
    • http://loaminoo.linkpc.net/1099094097096097/Prairie-Fire-The-Story-of-Owen-2-by-E-K-Johnston.pdf
    • http://loaminoo.linkpc.net/1091091094099090094/The-Vasa-Saga-The-Story-of-a-Ship-by-Bertil-Almqvist.pdf
    • http://loaminoo.linkpc.net/5092095093092095/Poet-The-Remarkable-Story-of-George-Moses-Horton-by-Don-Tate.pdf
    • http://loaminoo.linkpc.net/1090095095091098096/The-Desert-Rat-The-Remarkable-Story-of-Aileen-Coleman-by-Annette-Adams.pdf
    • http://loaminoo.linkpc.net/4090091098098/Wesley-the-Owl-The-Remarkable-Love-Story-of-an-Owl-and-His-Girl-by-Stacey-O-39-Brien.pdf
    • http://loaminoo.linkpc.net/1090090092099095/Muddling-Through-The-Remarkable-Story-of-the-Barr-Colonists-by-Lynne-Bowen.pdf
    • http://loaminoo.linkpc.net/1090090090098092/J-B-McLachlan-A-Biography-The-Story-of-a-Legendary-Labour-Leader-and-the-Cape-Breton-Coal-Miners-by-David-Frank.pdf
    • http://loaminoo.linkpc.net/9091094096096098/Su-rez-The-Remarkable-Story-Behind-Football-s-Most-Explosive-Talent-by-Luca-Caioli.pdf
    • http://loaminoo.linkpc.net/7099091098092099/Receiving-Erin-s-Children-Phila