Malicious PDF — malware analysis report

Static analysis result for SHA-256 732a9f0dc19d6461…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 05:39:10 +01:00 Authoring application: mPDF 5.7
MD5: daa9a9a9c7aae39ab6e1a75bf2858a24 SHA-1: a4d22b8c1060eb77030a64838a50bb7c6bdb6db6 SHA-256: 732a9f0dc19d64613da6a437c2774e6529b1d0f288e6a0b94b22289efbdfe014
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, which is a common tactic for SEO manipulation or distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristic suggest an attempt to redirect users to potentially harmful content, possibly via JavaScript execution within the PDF.

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/6093098090099090/Ivanhoe-The-Talisman-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/8098099094099093/Ivanhoe-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/1098092098091096/Ivanhoe-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/3093090096095096/Ivanhoe-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/3094099091092099/Ivanhoe-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/1090091091095095094/Ivanhoe-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/5096092095092097/Ivanhoe-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/5096098098090099/Ivanhoe---A-Romance-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/9093091096090090/Ivanhoe-Annotated-A-Romance-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/6093098090096099/Ivanhoe-Classics-Illustrated-2-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/5099090093097093/Ivanho-Annot-Version-fran-aise-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/9096095090091097/Erz-hlungen-der-Kreuzfahrer-Die-Verlobten-Der-Talisman-Richard-L-wenherz-in-Pal-stina---Vollst-ndige-deutsche-Ausgaben-Rittergeschichten-Historische-Romane-12-Jahrhundert-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/8092092090096099/Lady-of-the-Lake-Walter-Scott-1910-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/6093098091098099/Cliffsnotes-on-Scott-s-Ivanhoe-by-Norma-Ostrander.pdf
    • http://loaminoo.linkpc.net/2092091099091090/The-Onyx-Talisman-Talisman-3-by-Brenda-Pandos.pdf
    • http://loaminoo.linkpc.net/1098091097098097/Lover-s-Talisman-Talisman-Bay-1-by-Ashleigh-Raine.pdf
    • http://loaminoo.linkpc.net/1095092094098099/The-Sapphire-Talisman-Talisman-2-by-Brenda-Pandos.pdf
    • http://loaminoo.linkpc.net/2090098098096092/The-Talisman-The-Talisman-1-by-Stephen-King.pdf
    • http://loaminoo.linkpc.net/3095093094096096/Rob-Roy-by-Walter-Scott.pdf
    • http://loaminoo.linkpc.net/7098093093097093/The-Talisman-Chronicles-Volume-Three-The-Vampire-Diaries-The-Talisman-Chronicles-3-by-Mandy-Balde.pdf