Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7837f00568f070a…

MALICIOUS

PDF

22.2 KB Created: 2019-05-01 17:33:21 +01:00 Authoring application: mPDF 5.7
MD5: dd0b215bc00f3e8c48336751a0e446a1 SHA-1: c433b53ae3409ee8b633164232fe850479119188 SHA-256: d7837f00568f070a696a874437d69fdd05c0e9964b82c340b31ecc97ad376230
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded external links, many of which point to PDF files. The heuristic PDF_SEO_LINK_FARM indicates this is a link farm designed to artificially inflate search engine rankings or distribute content. The embedded URLs, while individually marked as benign, collectively form the basis of the attack. The primary goal appears to be directing users to a large collection of external documents, potentially for SEO manipulation or to host malicious content disguised as legitimate files.

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/5092094097094099/Les-Desastreuses-Aventures-des-Orphelins-de-Baudelaire-Tome-1-Tout-Commence-Mal-French-edition-of-A-Series-of-Unfortunate-Events-Volume-1-The-Bad-Beginning-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/3092096091090/The-Bad-Beginning-A-Series-of-Unfortunate-Events-1-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/7093098093092/A-Series-of-Unfortunate-Events-1-The-Bad-Beginning-Netflix-Tie-in-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/8097090091094/A-Series-of-Unfortunate-Events-Collection-Books-10-13-A-Series-of-Unfortunate-Events-Boxset-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/7096093091099/A-Series-Of-Unfortunate-Events-Pack-Books-5-8-Series-Of-Unfortunate-Events-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/3096093098098095/The-Miserable-Mill-A-Series-of-Unfortunate-Events-4-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/2098095094095097/The-Reptile-Room-A-Series-of-Unfortunate-Events-2-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/3093095093099097/The-Reptile-Room-A-Series-of-Unfortunate-Events-2-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/2096095094092093/The-Vile-Village-A-Series-of-Unfortunate-Events-7-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/8097097093094/The-Slippery-Slope-A-Series-of-Unfortunate-Events-10-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/8097091097095/The-Cumbersome-Collection-A-Series-of-Unfortunate-Events-1-11-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/2098095094097094/The-Carnivorous-Carnival-A-Series-of-Unfortunate-Events-9-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/4097094098093/The-Ersatz-Elevator-A-Series-of-Unfortunate-Events-6-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/1094092097096092/The-Austere-Academy-A-Series-of-Unfortunate-Events-5-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/3095091099097094/The-Slippery-Slope-A-Series-of-Unfortunate-Events-10-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/3098098095096093/The-Vile-Village-A-Series-of-Unfortunate-Events-7-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/1094092098097093/The-Miserable-Mill-A-Series-of-Unfortunate-Events-4-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/3093099092090/The-Wide-Window-A-Series-of-Unfortunate-Events-3-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/9094091090093/A-Series-of-Unfortunate-Events-Pack-Books-1-4-Series-of-Unfortunate-Events-Books-1-4-by-Lemony-Snicket.pdf
    • http://loaminoo.linkpc.net/5094098096098094/A-Series-of-Unfortunate-Events-Collection-Books-1-13-with-Bonus-Material-The-Bad-Beginning-The-Reptile-Room-The-Wide-Window-The-Miserable-Mill-The-Austere-Academy-The-Ersatz-Elevator-The-Vile-Village-The-Hostile-Hospital-The-Carnivorous-Carni-by-Lemony-Snicket.pdf

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