Malicious PDF — malware analysis report

Static analysis result for SHA-256 71b041a90ebffed6…

MALICIOUS

PDF

13.2 KB Created: 2019-05-07 03:35:23 +01:00 Authoring application: mPDF 5.7
MD5: 59048fa8b15a6e3ef3901687cd3f2191 SHA-1: e5e36312dc96fe99c822934dfdf87333a79a47b2 SHA-256: 71b041a90ebffed6026d0132f23b0ec51502f305824d65caabe45a9b61f5839f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect the user to potentially harmful content, possibly via embedded JavaScript or other exploit vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/9090095091094098/Be-Polite-and-Kind-by-Cheri-J-Meiners.pdf
    • http://loaminoo.linkpc.net/9090095091095099/Respect-and-Take-Care-of-Things-by-Cheri-J-Meiners.pdf
    • http://loaminoo.linkpc.net/4090091095095094/Ch-ri-and-the-Last-of-Ch-ri-by-Colette.pdf
    • http://loaminoo.linkpc.net/2096099093092099/Ch-ri-and-The-Last-of-Ch-ri-by-Colette.pdf
    • http://loaminoo.linkpc.net/6097098097094094/Being-Polite-to-Hitler-by-Robb-Forman-Dew.pdf
    • http://loaminoo.linkpc.net/3094091090097099/Silent-Spring-at-50-The-False-Crises-of-Rachel-Carson-by-Roger-E-Meiners.pdf
    • http://loaminoo.linkpc.net/4098092090097094/Polite-Elephant-The-Little-Golden-Treasures-Series-by-Richard-Scarry.pdf
    • http://loaminoo.linkpc.net/1099092094092091/A-Kind-of-Truth-A-Kind-of-Stories-1-by-Lane-Hayes.pdf
    • http://loaminoo.linkpc.net/7093096095099099/Keigo-in-Modern-Japan-Polite-Language-from-Meiji-to-the-Present-by-Patricia-J-Wetzel.pdf
    • http://loaminoo.linkpc.net/1091090096091092093/Pippi-by-Cheri-Christian.pdf
    • http://loaminoo.linkpc.net/2095095097096097/The-Peasant-Queen-by-Cheri-Chesley.pdf
    • http://loaminoo.linkpc.net/8098099099091/Attractions-of-the-Heart-by-Cheri-Crystal.pdf
    • http://loaminoo.linkpc.net/2091090092094094/Kate-s-Turn-by-Cheri-J-Crane.pdf
    • http://loaminoo.linkpc.net/4099090098099091/Fair-Maiden-by-Cheri-Schmidt.pdf
    • http://loaminoo.linkpc.net/1092091096096098/Fractured-Fateful-2-by-Cheri-Schmidt.pdf
    • http://loaminoo.linkpc.net/2097094091091093/City-of-Light-by-Cheri-Chesley.pdf
    • http://loaminoo.linkpc.net/3099091091099093/That-Which-You-Are-Seeking-Is-Causing-You-to-Seek-by-Cheri-Huber.pdf
    • http://loaminoo.linkpc.net/1091095092096098096/LIVING-WITH-CHRONIC-ILLNESS-by-Cheri-Register.pdf
    • http://loaminoo.linkpc.net/9090090090097098/Free-Beer-and-Frauleins-by-Cheri-Verset.pdf
    • http://loaminoo.linkpc.net/2099092092090092/The-Werewolf-s-Sin-Voodoo-Moon-3-by-Cheri-Scotch.pdf

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