Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8722deced2aee30…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 17:29:21 +01:00 Authoring application: mPDF 5.7
MD5: 328457e36fbdeedbb87859de14442e49 SHA-1: 6e737bbf75d4bf72afcc9a0d2678a0c179b04a49 SHA-256: e8722deced2aee308c766c5f8a6c1c666a862f4e0f39300e9a9b1b7f989db236
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing of PDF_SEO_LINK_FARM suggest a malicious intent, likely for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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/2091091099098099/The-Waterfall-Traveler-by-S-J-Lem.pdf
    • http://loaminoo.linkpc.net/6093093090096094/Southwest-Traveler-Lost-Mines-Buried-Treasure-A-Guide-to-Sites-and-Legends-of-the-Southwest-American-Traveler-Series-by-Edward-Rochette.pdf
    • http://loaminoo.linkpc.net/4091099096095099/The-Waterfall-by-Carla-Neggers.pdf
    • http://loaminoo.linkpc.net/3099094097093090/Can-t-Go-Without-Oasis-Waterfall-2-by-Angelisa-Stone.pdf
    • http://loaminoo.linkpc.net/9095097097094098/Waterfall-Glen-by-Davie-Henderson.pdf
    • http://loaminoo.linkpc.net/4091094095090095/The-Diamond-Waterfall-by-Pamela-Haines.pdf
    • http://loaminoo.linkpc.net/7094092090097/Waterfall-Teardrop-2-by-Lauren-Kate.pdf
    • http://loaminoo.linkpc.net/2091090098099097/A-New-Path-to-the-Waterfall-by-Raymond-Carver.pdf
    • http://loaminoo.linkpc.net/3092094092095097/The-Traveler-s-Gate-Trilogy-Traveler-s-Gate-1-3-by-Will-Wight.pdf
    • http://loaminoo.linkpc.net/3093093093091094/Death-of-a-Waterfall-Hayden-Falls-Saga-1-by-Kara-Leigh-Miller.pdf
    • http://loaminoo.linkpc.net/7095099098093095/The-Waterfall-Diet-Lose-Up-to-14-Pounds-in-7-Days-by-Controlling-Water-Retention-by-Linda-Lazarides.pdf
    • http://loaminoo.linkpc.net/1090095094096095098/The-Traveler-by-Don-Coldsmith.pdf
    • http://loaminoo.linkpc.net/1092097091096/Traveler-by-Elaine-Fox.pdf
    • http://loaminoo.linkpc.net/1096093096090095/The-Far-Traveler-by-A-Bertram-Chandler.pdf
    • http://loaminoo.linkpc.net/1091096096095092092/The-Seventh-Traveler-by-J-N-Kirchner.pdf
    • http://loaminoo.linkpc.net/4091090096090091/Dream-Traveler-by-J-A-Ferguson.pdf
    • http://loaminoo.linkpc.net/7091099095097093/Universal-Traveler-by-Don-Koberg.pdf
    • http://loaminoo.linkpc.net/5099096090090095/Home-The-Traveler-1-by-Tom-Abrahams.pdf
    • http://loaminoo.linkpc.net/4099098095092092/First-You-Fight-Traveler-1-by-D-B-Drumm.pdf
    • http://loaminoo.linkpc.net/1091099097090098/Star-Chaser-The-Traveler-by-Reiter.pdf