Malicious PDF — malware analysis report

Static analysis result for SHA-256 352fbe6951bb724c…

MALICIOUS

PDF

13.8 KB Created: 2019-04-30 08:51:33 +01:00 Authoring application: mPDF 5.7
MD5: 9e5e1ad4ad4fb009c3bd7373c0a69640 SHA-1: bcdc2f326a7d1673fa84216bc2d0f86b9a0a0f67 SHA-256: 352fbe6951bb724c5dba2bf94f1757003f83653acc76fd4053503c990314f16e
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, identified as a PDF SEO link farm, pointing to various book titles hosted on loaminoo.linkpc.net. While the specific intent beyond link farming is unclear due to the lack of executable scripts or readable document body, the sheer volume and nature of the links suggest a malicious attempt to manipulate search engine results or distribute potentially harmful content. The ML classifier's high confidence score supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/2093098091099093/Show-Judge-Saddle-Club-95-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/8096093090096/Horsenapped-Saddle-Club-17-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/2093098091095097/Sidesaddle-Saddle-Club-88-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/2093098091096098/New-Rider-The-Saddle-Club-96-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/8091098099097/Saddlebags-Saddle-Club-42-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/6095093095098097/Tight-Rein-Saddle-Club-57-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/7094098092099/Holiday-Horse-Saddle-Club-72-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/7092091092094/Ranch-Hands-Saddle-Club-29-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/6097092099097/Stable-Groom-Saddle-Club-45-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/2093098091097095/Rodeo-Rider-Saddle-Club-12-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/2093098091095094/Stable-Manners-Saddle-Club-28-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/8093092095099098/Horse-Trouble-Saddle-Club-23-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/8093092096093099/Horse-Sitters-Saddle-Club-53-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/2093098091097096/Dream-Horse-Saddle-Club-Super-Edition-4-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/2093097096090095/The-Secret-of-the-Stallion-Saddle-Club-Super-Edition-2-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/1090096094094094091/Kleines-Fohlen-in-Not-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/4096096097093094/Carole-The-Inside-Story-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/1091091091092093098/Rent-A-Third-Grader-by-Bonnie-Bryant-Hiller.pdf
    • http://loaminoo.linkpc.net/6094093090091099/Penalty-Points-Pine-Hollow-7-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/1092090096099093/Lucas-Mackenzie-and-the-London-Midnight-Ghost-Show-by-Steve-Bryant.pdf

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