Malicious PDF — malware analysis report

Static analysis result for SHA-256 609a51bcd533b79c…

MALICIOUS

PDF

15.1 KB Created: 2019-04-30 04:07:56 +01:00 Authoring application: mPDF 5.7
MD5: 4e1fc8adbdd9b01f2eb3834b4bbb2e77 SHA-1: 69245c8b3142c6972868c5ef607578cd8ac8d81e SHA-256: 609a51bcd533b79c8a8f8f2e99597f7c18098734fcfba8608564b69ed6c540ee
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this document as malicious. While the specific intent of the links is unclear, the sheer volume and the use of a dynamic DNS domain suggest a malicious campaign.

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/2097092096099090/Breakfast-in-Bed-Bed-amp-Breakfast-1-by-Sandra-Brown.pdf
    • http://loaminoo.linkpc.net/3098098095090098/Kyles-Bed-amp-Breakfast-A-Second-Bowl-Of-Serial-Kyles-Bed-amp-Breakfast-2-by-Greg-Fox.pdf
    • http://loaminoo.linkpc.net/5099095093093092/Easy-Crepe-Cookbook-50-Delicious-Crepe-Recipes-Crepe-Recipes-Crepe-Cookbook-Breakfast-Recipes-Breakfast-Cookbook-Book-1-by-Maggie-Chow.pdf
    • http://loaminoo.linkpc.net/3094094092092094/Breakfast-at-Sadie-s-by-Lee-Weatherly.pdf
    • http://loaminoo.linkpc.net/1090093091091091095/breakfast-club-by-divergents.pdf
    • http://loaminoo.linkpc.net/2090097090093099/Breakfast-In-Bed-by-Robert-Zimmermann.pdf
    • http://loaminoo.linkpc.net/9093094095094099/Breakfast-in-Miami-by-Reinhard-Lettau.pdf
    • http://loaminoo.linkpc.net/4097092094096095/Breakfast-at-Tiffany-s-by-Truman-Capote.pdf
    • http://loaminoo.linkpc.net/3096093098098092/Breakfast-at-Tiffany-s-by-Truman-Capote.pdf
    • http://loaminoo.linkpc.net/7095094098097096/Breakfast-in-the-Ruins-by-Michael-Moorcock.pdf
    • http://loaminoo.linkpc.net/6098090090094090/Breakfast-With-The-Infidels-by-Nabil-Shawkat.pdf
    • http://loaminoo.linkpc.net/1090093093093093091/Room-for-Two-Breakfast-in-Bed-2-by-Sydney-Landon.pdf
    • http://loaminoo.linkpc.net/4094098099093093/Second-to-None-The-Breakfast-Club-3-by-Felice-Stevens.pdf
    • http://loaminoo.linkpc.net/1095094097092098/Breakfast-of-Champions-by-Kurt-Vonnegut.pdf
    • http://loaminoo.linkpc.net/1093099091099091/Breakfast-with-Scot-by-Michael-Downing.pdf
    • http://loaminoo.linkpc.net/3095097098093098/This-Old-Souse-Bed-and-Breakfast-20-by-Mary-Daheim.pdf
    • http://loaminoo.linkpc.net/4092095095091098/Pancakes-for-Breakfast-by-Tomie-dePaola.pdf
    • http://loaminoo.linkpc.net/3099097096092092/From-Thunder-to-Breakfast-by-Gene-K-Garrison.pdf
    • http://loaminoo.linkpc.net/2094091091098096/Jellybeans-for-Breakfast-by-Miriam-Young.pdf
    • http://loaminoo.linkpc.net/1091096093093094096/At-the-Meade-Bed-amp-Breakfast-by-Robert-Swartwood.pdf

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