Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d4d36b9f15ad6a…

MALICIOUS

PDF

15.7 KB Created: 2019-04-30 17:41:56 +01:00 Authoring application: mPDF 5.7
MD5: 4d518d1224b2c49e3f6c495e6bb96ccd SHA-1: 5df59e248066561457e7b1de10263de0e553703b SHA-256: 74d4d36b9f15ad6aedd5ea04a1cbbd2738e901eea60e7588f86baee55910f45a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that appear to be part of an SEO link farm, as indicated by the PDF_SEO_LINK_FARM heuristic. While the ML classifier flagged the PDF as malicious, the specific intent beyond link manipulation is unclear due to the lack of executable scripts and the benign reputation of the linked URLs. The document body is heavily obfuscated, preventing a clear understanding of its direct purpose.

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/1092098093091096/Severance-Volition-2-by-Shawn-Kirsten-Maravel.pdf
    • http://loaminoo.linkpc.net/1092096096098093/The-Wanderer-Rider-1-by-Shawn-Kirsten-Maravel.pdf
    • http://loaminoo.linkpc.net/1091097090096095/Shifting-Gears-Rider-2-by-Shawn-Kirsten-Maravel.pdf
    • http://loaminoo.linkpc.net/1095093092097099/Happy-Birthday-Kirsten-A-Springtime-Story-American-Girls-Kirsten-4-by-Janet-Beeler-Shaw.pdf
    • http://loaminoo.linkpc.net/6094094099092099/Kirsten-Fortalt-Til-Annelise-Bistrup-by-Kirsten-Jacobsen.pdf
    • http://loaminoo.linkpc.net/1099096092090090/Meet-Kirsten-An-American-Girl-American-Girls-Kirsten-1-by-Janet-Beeler-Shaw.pdf
    • http://loaminoo.linkpc.net/8095099094/Severance-by-Ling-Ma.pdf
    • http://loaminoo.linkpc.net/1090096098091096096/Kirsten-Dunst-211-Success-Facts---Everything-You-Need-to-Know-about-Kirsten-Dunst-by-Tony-Francis.pdf
    • http://loaminoo.linkpc.net/4090091091093093/Severance-by-Robert-Olen-Butler.pdf
    • http://loaminoo.linkpc.net/8093097091097090/The-Kirsten-Prout-Handbook---Everything-You-Need-to-Know-about-Kirsten-Prout-by-Emily-Smith.pdf
    • http://loaminoo.linkpc.net/9097098094098094/System-Modeling-and-Simulation-An-Introduction-by-Frank-L-Severance.pdf
    • http://loaminoo.linkpc.net/9099091096097098/Introduction-to-Networking-How-the-Internet-Works-by-Charles-Severance.pdf
    • http://loaminoo.linkpc.net/9099094091097090/Severance-Pay-Poems-1967-1969-Writing-24-by-Philip-Whalen.pdf
    • http://loaminoo.linkpc.net/4093092090099092/More-Than-Anything-More-1-by-Shawn-Lane.pdf
    • http://loaminoo.linkpc.net/4095097099095097/Not-Quite-A-Mom-by-Kirsten-Sawyer.pdf
    • http://loaminoo.linkpc.net/6097096095092/The-Ice-Age-by-Kirsten-Reed.pdf
    • http://loaminoo.linkpc.net/5094090096092099/The-Purge-by-Shawn-Demumbrum.pdf
    • http://loaminoo.linkpc.net/3091096094096091/GJS-II-by-Shawn-Stewart-Ruff.pdf
    • http://loaminoo.linkpc.net/1097098092093091/All-Things-Different-by-Shawn-Underhill.pdf
    • http://loaminoo.linkpc.net/2099095094098092/Perfect-Man-by-Shawn-Lane.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.