Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60b7b0be0878e3e…

MALICIOUS

PDF

13.2 KB Created: 2019-05-02 05:27:09 +01:00 Authoring application: mPDF 5.7
MD5: dd559c95e47eae13e43844bbcfb7fb23 SHA-1: cab1cedae76ed8d9e559381b89759ecd31f7017e SHA-256: a60b7b0be0878e3e65a6a3e44d0e1a97cd6f4617c3b312c77edac92962665798
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various book titles hosted on the loaminoo.linkpc.net domain. While the individual URLs are marked as benign, the sheer volume and the heuristic firing suggest a link farm or redirection scheme designed to obscure the ultimate destination or to manipulate search engine results. The ML classifier also flagged this PDF as malicious, supporting the suspicious nature of the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/2091091098091094/Secret-Intentions-Cooper-13-Cooper-Security-6-by-Paula-Graves.pdf
    • http://loaminoo.linkpc.net/3094094093094094/Darling-Monster-The-Letters-of-Lady-Diana-Cooper-to-her-Son-John-Julius-Norwich-1939-1952-by-Lady-Diana-Cooper.pdf
    • http://loaminoo.linkpc.net/3098095097091096/The-Cooper-Kids-The-Cooper-Kids-Adventures-1-4-by-Frank-E-Peretti.pdf
    • http://loaminoo.linkpc.net/5090094094099090/The-End-of-Me-by-J-S-Cooper.pdf
    • http://loaminoo.linkpc.net/2098090095093094/To-You-From-Me-by-J-S-Cooper.pdf
    • http://loaminoo.linkpc.net/1098096091093094/Mr-Right-by-J-S-Cooper.pdf
    • http://loaminoo.linkpc.net/3096093098099096/The-HookUp-by-J-S-Cooper.pdf
    • http://loaminoo.linkpc.net/3098097/The-Marauders-by-Tom-Cooper.pdf
    • http://loaminoo.linkpc.net/1098092094099/Outside-In-by-Doug-Cooper.pdf
    • http://loaminoo.linkpc.net/3094090096098091/My-Man-Godric-by-R-Cooper.pdf
    • http://loaminoo.linkpc.net/1097096099097092/The-Kept-Girl-by-Kim-Cooper.pdf
    • http://loaminoo.linkpc.net/8092096098098097/Weed-by-Clarence-L-Cooper-Jr-.pdf
    • http://loaminoo.linkpc.net/4095091093098091/The-Magician-s-Boy-by-Susan-Cooper.pdf
    • http://loaminoo.linkpc.net/3095092096092092/Jazz-Baby-by-Tea-Cooper.pdf
    • http://loaminoo.linkpc.net/2098091093091093/To-Date-a-Cowboy-by-J-S-Cooper.pdf
    • http://loaminoo.linkpc.net/4099090094093097/Wicklow-s-Odyssey-by-R-Cooper.pdf
    • http://loaminoo.linkpc.net/5094091090092091/The-Devil-Will-Come-by-Glenn-Cooper.pdf
    • http://loaminoo.linkpc.net/1097095097099092/Avenged-Vanished-2-by-E-E-Cooper.pdf
    • http://loaminoo.linkpc.net/3092097096093093/The-Winter-Prince-by-R-Cooper.pdf
    • http://loaminoo.linkpc.net/2097097094095098/Matilda-s-Freedom-by-Tea-Cooper.pdf
    • http://loaminoo.linkpc.net/10970960990

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