Malicious PDF — malware analysis report

Static analysis result for SHA-256 b63bccd439268180…

MALICIOUS

PDF

13.4 KB Created: 2019-05-07 03:58:04 +01:00 Authoring application: mPDF 5.7
MD5: 150a3169b6e9f7ba99bfaecc68343938 SHA-1: 413022a6befe66f1b2aa5b8760ff68c4bd5f5d4d SHA-256: b63bccd4392681800f63791fe681f15c5ef0bbadbe99bd62fc43588d3f8b8864
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs, while currently marked as benign, are likely used to direct users to malicious content or for SEO manipulation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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/3097099091091090/The-Cabin-Books-The-Cabin-and-The-Asylum-by-Matt-Shaw.pdf
    • http://loaminoo.linkpc.net/4090092099097093/Cabin-Fever-by-B-A-Tortuga.pdf
    • http://loaminoo.linkpc.net/4099095093099097/Cabin-Nights-by-Ashley-John.pdf
    • http://loaminoo.linkpc.net/4099093092093094/The-Woman-in-Cabin-10-by-Ruth-Ware.pdf
    • http://loaminoo.linkpc.net/1090095098098090098/Your-Cabin-in-the-Woods-by-Conrad-E-Meinecke.pdf
    • http://loaminoo.linkpc.net/2091095096093097/The-Cabin-Sessions-by-Isobel-Blackthorn.pdf
    • http://loaminoo.linkpc.net/7092091092098098/Cabin-Commotion-by-Brina-Brady.pdf
    • http://loaminoo.linkpc.net/2093090095095092/Haley-s-Cabin-by-Anne-Rainey.pdf
    • http://loaminoo.linkpc.net/1090093093095092097/The-Cabin-at-the-End-of-the-World-by-Paul-Tremblay.pdf
    • http://loaminoo.linkpc.net/2094098098095098/The-Woman-in-Cabin-10-by-Ruth-Ware.pdf
    • http://loaminoo.linkpc.net/6099096095097098/Paul-Gerrard-The-Cabin-Boy-by-W-H-G-Kingston.pdf
    • http://loaminoo.linkpc.net/2099097094098/Cabin-Fever-by-Jeff-Kinney.pdf
    • http://loaminoo.linkpc.net/3095097098/The-Woman-in-Cabin-10-by-Ruth-Ware.pdf
    • http://loaminoo.linkpc.net/1092091098095090/The-Haunting-of-Cabin-Green-by-April-A-Taylor.pdf
    • http://loaminoo.linkpc.net/3095093095098097/Uncle-Tom-s-Cabin-by-Harriet-Beecher-Stowe.pdf
    • http://loaminoo.linkpc.net/5097090093098095/Uncle-Tom-s-Cabin-by-Harriet-Beecher-Stowe.pdf
    • http://loaminoo.linkpc.net/1093094095096/Cabin-on-Trouble-Creek-by-Jean-Van-Leeuwen.pdf
    • http://loaminoo.linkpc.net/6090092098093096/Woman-in-Cabin-10-Thriller-by-Ruth-Ware.pdf
    • http://loaminoo.linkpc.net/7090094098091099/Uncle-Tom-s-Cabin-by-Harriet-Beecher-Stowe.pdf
    • http://loaminoo.linkpc.net/9097093098095/A-Log-Cabin-Christmas-Collection-by-Wanda-E-Brunstetter.pdf

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