Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3bda2353ee2035…

MALICIOUS

PDF

13.6 KB Created: 2019-05-04 14:38:12 +01:00 Authoring application: mPDF 5.7
MD5: 2e889a9485afcf9448ca8442d2532cd4 SHA-1: 2e0ead137cbc0373d8e105f6b73422140c67c443 SHA-256: 9d3bda2353ee2035c3eb2c693b623e48b76045dc5dcdf08afe71c6622b2cd858
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, indicating a link farm or redirection strategy. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to click on these links, which are presented as book titles. No scripts were extracted, and the document body was heavily obfuscated, but the link farm heuristic is strong evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/6091099092098095/Since-the-Sirens-Sirens-of-the-Zombie-Apocalypse-1-by-E-E-Isherwood.pdf
    • http://loaminoo.linkpc.net/3097094097094097/Lorelei-and-the-Sirens-The-Sirens-1-by-Aaronni-Miller.pdf
    • http://loaminoo.linkpc.net/6091099093091091/The-Three-Sirens-by-Irving-Wallace.pdf
    • http://loaminoo.linkpc.net/4090099095096/The-Sirens-of-Titan-by-Kurt-Vonnegut.pdf
    • http://loaminoo.linkpc.net/1099094099091094/The-Sirens-of-Falkeld-by-Julie-Tuovi.pdf
    • http://loaminoo.linkpc.net/3090093093096092/Rising-Tide-Sirens-1-by-T-L-Zalecki.pdf
    • http://loaminoo.linkpc.net/2095091093095/The-Sirens-of-Titan-by-Kurt-Vonnegut.pdf
    • http://loaminoo.linkpc.net/1099093095097098/Gotham-City-Sirens-1-by-Paul-Dini.pdf
    • http://loaminoo.linkpc.net/1097091096092096/Siren-Unleashed-Texas-Sirens-7-by-Sophie-Oak.pdf
    • http://loaminoo.linkpc.net/7099091092091091/Gotham-City-Sirens-13-by-Tony-Bedard.pdf
    • http://loaminoo.linkpc.net/6098099099099099/Remy-s-Release-Submissive-Sirens-1-by-Charlotte-Smith.pdf
    • http://loaminoo.linkpc.net/1090091099092097099/Soul-Breather-21st-Century-Sirens-1-by-T-Stedman.pdf
    • http://loaminoo.linkpc.net/4095092096090097/The-Sirens-of-Surrentum-The-Roman-Mysteries-11-by-Caroline-Lawrence.pdf
    • http://loaminoo.linkpc.net/5097090096095/Forbidden-Discover-the-Legend-Wolf-Sirens-1-by-Tina-Smith.pdf
    • http://loaminoo.linkpc.net/3090093093096097/Rescue-Sirens-The-Search-for-the-Atavist-by-Jessica-Steele-Sanders.pdf
    • http://loaminoo.linkpc.net/2096099091091/The-Sirens-Sang-of-Murder-Hilary-Tamar-3-by-Sarah-Caudwell.pdf
    • http://loaminoo.linkpc.net/2094097093097099/Forbidden-Discover-the-Legend-Wolf-Sirens-1-by-Tina-Smith.pdf
    • http://loaminoo.linkpc.net/7092099091096091/Every-Time-with-a-Highlander-Sirens-of-the-Scottish-Borderlands-3-by-Gwyn-Cready.pdf
    • http://loaminoo.linkpc.net/6095091095096090/Gotham-City-Sirens-Vol-3-Strange-Fruit-by-Tony-Bedard.pdf
    • http://loaminoo.linkpc.net/4090099094096098/Sirens-And-Other-Daemon-Lovers-Magical-Tales-Of-Love-And-Seduction-by-Ellen-Datlow.pdf
    • http://loaminoo.linkpc.net

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