Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83d6e925ad36483…

MALICIOUS

PDF

18.1 KB Created: 2019-05-06 16:51:01 +01:00 Authoring application: mPDF 5.7
MD5: ebbdea0940eaf0155b3d35988f79b381 SHA-1: 6cd846157476dfd9a56eeb4902337fd84208caa2 SHA-256: c83d6e925ad36483dc09fe979b7eec697c2ca7836e3b62745f25ce192a4f8c9d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents hosted on the domain 'loaminoo.linkpc.net'. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious content. While no scripts were extracted, the heuristic 'PDF_SEO_LINK_FARM' strongly suggests this malicious intent. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/1090091096096099095/Washington-Irving-s-Rip-Van-Winkle-by-Thomas-Locker.pdf
    • http://loaminoo.linkpc.net/8097095094090/Legend-of-Sleepy-Hollow-and-Rip-Van-Winkle-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/8095091095091090/The-Sketch-Book-by-Washington-Irving-with-Sketch-of-the-Author-s-Life-and-Compositional-Critical-and-Explanatory-Notes-By-G-A-Chase-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/6091098097094097/Life-of-Mahomet-by-Washington---Irving.pdf
    • http://loaminoo.linkpc.net/5093098093090090/The-Spectre-Bridegroom-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/7094094094091093/A-Tour-on-the-Prairies-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/4099098099098097/Tales-of-the-Alhambra-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/6091098097094093/The-Life-of-Mahomet-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/9092098092095099/Die-Legende-von-Sleepy-Hollow-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/2097092097097093/The-Legend-of-Sleepy-Hollow-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/1090091099097091092/The-Legend-of-Sleepy-Hollow-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/7091093090095094/The-Sketch-Book-Illustr-with-120-Engravings-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/4099099098096095/The-Life-and-Voyages-of-Christopher-Columbus-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/4094094099095096/The-Legend-of-Sleepy-Hollow-and-Other-Tales-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/9094091096094091/Die-Legende-Von-Schlaf-Tal-The-Legend-of-Sleepy-Hollow-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/8091096095099092/A-Lenda-Do-Vale-Dormir-The-Legend-of-Sleepy-Hollow-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/5093098094098093/The-Legend-of-Sleepy-Hollow-and-the-Spectre-Bridegroom-From-the-Sketch-Book-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/1091095091090091093/The-legend-of-Sleepy-Hollow-Found-Among-the-Papers-of-the-Late-Diedrich-Knickerbocker-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/1090096098093098099/La-leyenda-de-Sleepy-Hollow-edici-n-biling-e-Libro-biling-e-English-Espa-ol-by-Washington-Irving.pdf
    • http://loaminoo.linkpc.net/2093092090093/George-Washington-Vol-1-Young-Washington-by-Douglas-Southall-Freeman.pdf

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