Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21aa58f5f1d27fe…

MALICIOUS

PDF

18.5 KB Created: 2019-05-01 17:27:10 +01:00 Authoring application: mPDF 5.7
MD5: 4c1650cbe1d555c7f77dda873d8b41a3 SHA-1: 71f444358d1867e23f7b70bc8ed5c83fabc5ee67 SHA-256: d21aa58f5f1d27fe34c33723b687babb267e2655fb98fdbc7094acfba02946f8
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file exhibits a critical heuristic firing for a link farm, containing 32 external links. The embedded URLs, while currently marked as benign, are part of a pattern often used to distribute malicious content or manipulate search engine results. The document body itself is heavily obfuscated and contains numerous repetitions of these URLs, reinforcing the link farm behavior. No scripts were extracted from this sample.

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/8093092095099098/Horse-Trouble-Saddle-Club-23-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/8093092096093099/Horse-Sitters-Saddle-Club-53-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/7094098092099/Holiday-Horse-Saddle-Club-72-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/6093090097091095/Saddle-Up-Your-Own-White-Horse-5-Principles-Every-Woman-Needs-to-Know-by-Saundra-Pelletier.pdf
    • http://loaminoo.linkpc.net/2093098091097096/Dream-Horse-Saddle-Club-Super-Edition-4-by-Bonnie-Bryant.pdf
    • http://loaminoo.linkpc.net/8093092096093098/Saddle-and-a-Siren-Hell-Yeah-Heroes-in-the-Saddle-3-by-Randi-Alexander.pdf
    • http://loaminoo.linkpc.net/8092097093099094/A-Good-Lookin-Horse-Cowboy-Poetry-and-Other-Verses-by-Stan-Tixier.pdf
    • http://loaminoo.linkpc.net/9096090090099096/Neue-Freunde-finden-In-3-Monaten-neue-Freunde-finden---garantiert-by-Cornelius-Gehrmann.pdf
    • http://loaminoo.linkpc.net/4094097090095098/Crazy-Good-The-True-Story-of-Dan-Patch-the-Most-Famous-Horse-in-America-by-Charles-Leerhsen.pdf
    • http://loaminoo.linkpc.net/4096097092093090/Christmas-at-Saddle-Creek-The-Saddle-Creek-Series-by-Shelley-Peterson.pdf
    • http://loaminoo.linkpc.net/4093096093090091/Wonder-Horse-The-True-Story-of-the-World-s-Smartest-Horse-by-Emily-Arnold-McCully.pdf
    • http://loaminoo.linkpc.net/1091091098096090/The-Horse-Charmer-Phantom-Stallion-Wild-Horse-Island-1-by-Terri-Farley.pdf
    • http://loaminoo.linkpc.net/4096096090098099/Cross-Train-Your-Horse-Book-One-Simple-Dressage-for-Every-Horse-Every-Sport-by-Jane-Savoie.pdf
    • http://loaminoo.linkpc.net/4099094097098092/Sun-Horse-Moon-Horse-by-Rosemary-Sutcliff.pdf
    • http://loaminoo.linkpc.net/2092097092090090/War-Horse-War-Horse-1-by-Michael-Morpurgo.pdf
    • http://loaminoo.linkpc.net/1099091092099090/The-Heavenly-Horse-from-the-Outermost-West-Heavenly-Horse-1-by-Mary-Stanton.pdf
    • http://loaminoo.linkpc.net/6091092094098093/Green-Horse-Winter-The-Green-Horse-Hotel-2-by-Isolde-Pullum.pdf
    • http://loaminoo.linkpc.net/1090090095099095096/Lebenstempo-In-Alltag-und-Sport-den-eigenen-Rhythmus-finden-by-Nils-Schumann.pdf
    • http://loaminoo.linkpc.net/1090090094095095099/Ziemlich-beste-Pfoten-Zwei-Streuner-finden-heim-by-Christos-Yiannopoulos.pdf
    • http://loaminoo.linkpc.net/8098091092095097/Das-Value-Investing-Handbuch-Mit-bew-hrten-Methoden-die-besten-Investments-finden-by-John-Mihaljevic.pdf