Malicious PDF — malware analysis report

Static analysis result for SHA-256 817c5cd699e2831d…

MALICIOUS

PDF

15.1 KB Created: 2019-05-02 17:51:16 +01:00 Authoring application: mPDF 5.7
MD5: 248ab4a752a09b91aeea113518cbff9d SHA-1: 8be6452ff72bb9e2610006977a614f0b8d593296 SHA-256: 817c5cd699e2831da63241a5243057a7e4a2f117dbd06819a15b351bd7d91299
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of numerous external links suggests an attempt to direct users to potentially harmful content or for SEO manipulation. The primary attack pattern observed is the embedding of a link farm within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/4094099099098096/The-Bride-Of-Black-Douglas-Black-Douglas-1-by-Elaine-Coffman.pdf
    • http://loaminoo.linkpc.net/1091096090095099095/The-Edinburgh-Fate-The-Edinburgh-Seer-3-by-Alisha-Klapheke.pdf
    • http://loaminoo.linkpc.net/2091098095090094/The-Edinburgh-Heir-The-Edinburgh-Seer-2-by-Alisha-Klapheke.pdf
    • http://loaminoo.linkpc.net/1091095099092096/Tea-for-Three-by-Anne-Douglas.pdf
    • http://loaminoo.linkpc.net/3094093090092095/The-Best-Man-s-Bride-by-Anne-McAllister.pdf
    • http://loaminoo.linkpc.net/3094093093094098/The-Melody-Girls-by-Anne-Douglas.pdf
    • http://loaminoo.linkpc.net/4099095095099096/Making-Out-McCabes-2-by-Anne-Douglas.pdf
    • http://loaminoo.linkpc.net/2090093093092090/Unwanted-Bride-by-Anne-Hampson.pdf
    • http://loaminoo.linkpc.net/6093099096092090/The-Alexakis-Bride-by-Anne-McAllister.pdf
    • http://loaminoo.linkpc.net/7091092099098096/Castillo-s-Bride-by-Anne-Marie-Duquette.pdf
    • http://loaminoo.linkpc.net/1094096091099097/The-Pirate-s-Stowaway-Bride-by-Anne-Stryker.pdf
    • http://loaminoo.linkpc.net/2093091094096095/The-Summer-Bride-Chance-Sisters-4-by-Anne-Gracie.pdf
    • http://loaminoo.linkpc.net/1091095099092/Bride-by-Mistake-Devil-Riders-5-by-Anne-Gracie.pdf
    • http://loaminoo.linkpc.net/4090090092099094/The-Winter-Bride-Chance-Sisters-2-by-Anne-Gracie.pdf
    • http://loaminoo.linkpc.net/4097097092090092/A-Childhood-in-Brittany-Eighty-Years-Ago-by-Anne-Douglas-Sedgwick.pdf
    • http://loaminoo.linkpc.net/7090099099/The-MacKinnon-s-Bride-The-Highland-Brides-1-by-Tanya-Anne-Crosby.pdf
    • http://loaminoo.linkpc.net/2097099095098095/The-MacKinnon-s-Bride-The-Highland-Brides-1-by-Tanya-Anne-Crosby.pdf
    • http://loaminoo.linkpc.net/4096092093091095/The-MacKinnon-s-Bride-The-Highland-Brides-1-by-Tanya-Anne-Crosby.pdf
    • http://loaminoo.linkpc.net/6098090097092093/The-Confounding-of-Camelia---The-Original-Classic-Edition-by-Anne-Douglas-Sedgwick.pdf
    • http://loaminoo.linkpc.net/4098099097099/The-Brides-Trilogy-A-3-In-1-Edition-Including-The-Sherbrooke-Bride-The-Hellion-Bride-And-The-Heiress-Bride-by-Catherine-Coulter.pdf

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