Malicious PDF — malware analysis report

Static analysis result for SHA-256 b104b1cdf67e9d29…

MALICIOUS

PDF

14.4 KB Created: 2019-04-30 18:38:24 +01:00 Authoring application: mPDF 5.7
MD5: b2362f9052d77ef8d37298bba0379a02 SHA-1: 52d8f104c1c89eabeed91d5ce5945a7b5d89c803 SHA-256: b104b1cdf67e9d2914bd2c104082021d139c44fc3436ca0ccc161d23547ea1f8
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning attack. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the sheer volume of links to external PDFs hosted on loaminoo.linkpc.net indicates a likely attempt to distribute malicious content or manipulate search results.

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/1097091096090094/Romania-Around-the-World-in-80-Men-19-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091095093091/Poland-Around-the-World-in-80-Men-27-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091094098096/Holland-Around-the-World-in-80-Men-25-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091095099094/Nevada-Around-the-World-in-80-Men-22-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091094097093/Argentina-Around-the-World-in-80-Men-18-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091096092095/Finland-Around-the-World-in-80-Men-16-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/3099095095095093/Costa-Rica-Around-the-World-in-80-Men-30-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091095098092/Puerto-Rico-Around-the-World-in-80-Men-21-by-Rebecca-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091095091098/Around-the-World-in-80-men-Collection-21-25-by-Brandi-Ratliff.pdf
    • http://loaminoo.linkpc.net/1096099098091092/Florida-Around-the-World-in-80-Men-10-by-Brandi-Ratliff.pdf
    • http://loaminoo.linkpc.net/1096099098091094/Hawaii-Around-the-World-in-80-Men-6-by-Brandi-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091095095097/Around-the-World-in-80-men-Collection-11-20-by-Brandi-Ratliff.pdf
    • http://loaminoo.linkpc.net/1097091095098098/Around-the-World-in-80-men-Collection-16-20-by-Brandi-Ratliff.pdf
    • http://loaminoo.linkpc.net/4092096097091095/Who-in-the-World-Is-Carmen-Sandiego-by-Rebecca-Tinker.pdf
    • http://loaminoo.linkpc.net/1091091090097090095/Murnau-by-Romania.pdf
    • http://loaminoo.linkpc.net/2098098094097097/Bright-Before-Us-by-Katie-Arnold-Ratliff.pdf
    • http://loaminoo.linkpc.net/1090096094091091096/Searching-For-Dracula-In-Romania-by-C-t-lin-Gruia.pdf
    • http://loaminoo.linkpc.net/1090099092097091092/Never-Mind-the-Balkans-Here-s-Romania-by-Mike-Ormsby.pdf
    • http://loaminoo.linkpc.net/7097090097092094/Dress-and-Morality-in-Romania-by-Iulia-Gheorghiu.pdf
    • http://loaminoo.linkpc.net/1091095090095092/The-History-of-the-Holocaust-in-Romania-by-Jean-Ancel.pdf
    • http://loaminoo.linkpc.net/1097091095091098/Around-the-World-in-80-men-Collection-

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