Malicious PDF — malware analysis report

Static analysis result for SHA-256 700b46b751fdab54…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 01:57:27 +01:00 Authoring application: mPDF 5.7
MD5: f9ce99a5e3b127fd03f25046995087e6 SHA-1: 3481e05fa3fd4839d07bd06773f77381166996d0 SHA-256: 700b46b751fdab54b05f5df3ae9bfab556f8727b38c130dbd241b01322806c93
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing for PDF_SEO_LINK_FARM indicate a malicious intent to redirect users. The ML classifier also flagged this PDF as malicious with high confidence.

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/4099093093090/lizards-frogs-and-polliwogs-by-Douglas-Florian.pdf
    • http://loaminoo.linkpc.net/1091097096098094096/A-Pig-Is-Big-by-Douglas-Florian.pdf
    • http://loaminoo.linkpc.net/1094099099099097/mammalabilia-by-Douglas-Florian.pdf
    • http://loaminoo.linkpc.net/1091097096097092092/Poetrees-by-Douglas-Florian.pdf
    • http://loaminoo.linkpc.net/1090096096095096098/Flamingos-Fly-by-Douglas-Florian.pdf
    • http://loaminoo.linkpc.net/1090090097097092096/Monster-Motel-by-Douglas-Florian.pdf
    • http://loaminoo.linkpc.net/5091098099099/Singing-Lizards-by-Evadeen-Brickwood.pdf
    • http://loaminoo.linkpc.net/1091094093094090093/Florian-Hecker-Chimerizations-by-Florian-Hecker.pdf
    • http://loaminoo.linkpc.net/1091093098090098090/TERRALOG-Agamid-Lizards-of-Southern-Asia-Draconinae-2---Leiolepidinae-TERRALOG-7b-English-and-German-Edition-by-Ulrich-Manthey.pdf
    • http://loaminoo.linkpc.net/4099098095096094/Are-You-Together-by-frogs-of-war.pdf
    • http://loaminoo.linkpc.net/4097091096091/Frogs-by-Aristophanes.pdf
    • http://loaminoo.linkpc.net/1096097093090090/Too-Many-Frogs-by-Sandy-Asher.pdf
    • http://loaminoo.linkpc.net/1095096097092091/To-Sing-Frogs-by-John-M-Simmons.pdf
    • http://loaminoo.linkpc.net/7091092093097099/The-Frogs-and-Their-Monster-by-Swami-Chidvilasananda.pdf
    • http://loaminoo.linkpc.net/7099093094096091/The-Exile-Into-Eternity-A-Study-of-the-Narrative-Writings-of-Giorgio-Bassani-by-Douglas-Douglas.pdf
    • http://loaminoo.linkpc.net/1099091093095/Bosie-A-Biography-of-Lord-Alfred-Douglas-by-Douglas-Murray.pdf
    • http://loaminoo.linkpc.net/1091091098094099090/Frogs-And-Little-Ducks---Humor-Job-by-Talitha-Bayley.pdf
    • http://loaminoo.linkpc.net/6099099099096091/Fredrick-Frogs-Happy-Day-by-Marlene-D-Hughes.pdf
    • http://loaminoo.linkpc.net/1090094096096098095/Frogs-2006-Calendar-by-Frans-Lauting.pdf
    • http://loaminoo.linkpc.net/5090094094090094/Three-Plays-The-Wasps-The-Poet-and-the-Women-The-Frogs-by-Aristophanes.pdf

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