Malicious PDF — malware analysis report

Static analysis result for SHA-256 2665f587a61acd44…

MALICIOUS

PDF

15.6 KB Created: 2019-05-03 05:07:40 +01:00 Authoring application: mPDF 5.7
MD5: fb425bdce4eda9552ccb7918e03aa642 SHA-1: 8b6cb898268811bbc3c05efb322621220d9a440b SHA-256: 2665f587a61acd4464af882c64fbd7f8af8fcbd0680e6d55b8b86a549bc82490
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various book titles hosted on the 'loaminoo.linkpc.net' domain. While the ML classifier flagged the PDF as malicious with high confidence, the specific intent beyond link farming is unclear due to the lack of executable scripts or exploitable content in the provided excerpts. The primary attack pattern appears to be a form of SEO manipulation or a distribution vector for other malicious content via these numerous links.

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/4096091097094093/The-Lost-Hero-Heroes-of-Olympus-1-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/4098096094090092/The-Lost-Hero-The-Heroes-of-Olympus-1-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/2093093099095096/The-Lost-Hero-The-Heroes-of-Olympus-1-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/5090092090091099/The-Lost-Hero-Heroes-of-Olympus-1-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/4096097090093099/The-Heroes-of-Olympus-Paperback-3-Book-Boxed-Set-The-Heroes-of-Olympus-1-3-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/3091093091098095/The-Heroes-of-Olympus-Books-1-4-CD-Audiobook-Bundle-The-Heroes-of-Olympus-1-4-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/1093092093094097/The-Blood-of-Olympus-The-Heroes-of-Olympus-5-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/4095095098098/The-Blood-of-Olympus-The-Heroes-of-Olympus-5-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/3099090097090094/The-Blood-of-Olympus-Heroes-of-Olympus-5-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/8095096092094/The-Son-of-Neptune-Heroes-of-Olympus-2-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/3093095090095096/The-Son-of-Neptune-Heroes-of-Olympus-2-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/5096097091099092/A-Casa-de-Hades-Heroes-of-Olympus-4-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/4097093099095099/The-Heroes-of-Olympus-Paperback-Boxed-Set-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/4096091097094096/The-House-of-Hades-Heroes-of-Olympus-4-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/1090099097098093091/The-Demigod-Diaries-The-Heroes-of-Olympus-2-5-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/7096092090097/Das-Haus-des-Hades-The-Heroes-of-Olympus-4-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/4096091097094095/The-Mark-of-Athena-The-Heroes-of-Olympus-3-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/2094099097090099/The-Mark-of-Athena-Heroes-of-Olympus-3-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/2098092098098/The-Lost-Hero-by-Rick-Riordan.pdf
    • http://loaminoo.linkpc.net/1090090096096098/The-Lost-Hero-Sneak-Peek-by-Rick-Riordan.pdf

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