Malicious PDF — malware analysis report

Static analysis result for SHA-256 94351aca4b8d40e2…

MALICIOUS

PDF

17.1 KB Created: 2019-05-03 05:59:45 +01:00 Authoring application: mPDF 5.7
MD5: a549abc2a0ade728dc0f381f16ee3ac1 SHA-1: 9cef627e3aa3fa515696915d91fe195cd97e2082 SHA-256: 94351aca4b8d40e220af49a6c02d64a5f6a708f35b1a275a33e96f36489df544
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning attack. While the ML classifier strongly indicates maliciousness, the specific payload or intent beyond link distribution is not clear from the provided evidence. No scripts were extracted from this sample. The primary IOCs are the numerous URLs embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3091096098094096/Tears-of-Heaven-by-R-A-McCandless.pdf
    • http://loaminoo.linkpc.net/7091090096092/Tears-Of-Passion-Tears-Of-Shame-by-Graham-Diamond.pdf
    • http://loaminoo.linkpc.net/6095095098098098/Datavision-by-David-McCandless.pdf
    • http://loaminoo.linkpc.net/3097092091091091/The-Wild-Truth-by-Carine-McCandless.pdf
    • http://loaminoo.linkpc.net/3098099097091099/Critical-Vulnerability-A-Sasha-McCandless-Companion-Novel-by-Melissa-F-Miller.pdf
    • http://loaminoo.linkpc.net/6099091095094098/A-Night-at-Tears-of-Crimson-Tears-of-Crimson-1-by-Michelle-Hughes.pdf
    • http://loaminoo.linkpc.net/2094090094097094/Heaven-is-for-Real-A-Little-Boy-s-Astounding-Story-of-His-Trip-to-Heaven-and-Back-by-Todd-Burpo.pdf
    • http://loaminoo.linkpc.net/2096093099095099/Flight-to-Heaven-A-Plane-Crash-a-Lone-Survivor-a-Journey-to-Heaven--And-Back-by-Dale-Black.pdf
    • http://loaminoo.linkpc.net/2090091092096098/French-Foreign-Policy-during-the-Administration-of-Cardinal-Fleury-1726-1743-A-Study-in-Diplomacy-and-Commercial-Development-by-Arthur-McCandless-Wilson.pdf
    • http://loaminoo.linkpc.net/3096090092091098/Heaven-Help-Me-Or-Hell-Have-Me-Heaven-Help-Me-1-by-Jolyn-Palliata.pdf
    • http://loaminoo.linkpc.net/4098093099096097/Heaven-Sent-Heaven-s-Rejects-MC-1-by-Avelyn-Paige.pdf
    • http://loaminoo.linkpc.net/1093099093096091/Arranged-in-Heaven-Heaven-2-by-Sara-Jarrod.pdf
    • http://loaminoo.linkpc.net/2096099099090090/Cappuccino-Heaven-A-Life-After-Death-Cappuccino-Heaven-1-by-Michelle-Wright.pdf
    • http://loaminoo.linkpc.net/9097094093097090/Cappuccino-Heaven-A-Life-After-Death-Cappuccino-Heaven-1-by-Michelle-Wright.pdf
    • http://loaminoo.linkpc.net/7091090099091091/For-Heaven-s-Sake-For-Heaven-s-Sake-by-Sandy-Eisenberg-Sasso.pdf
    • http://loaminoo.linkpc.net/3091095095091095/Under-Heaven-Under-Heaven-1-by-Guy-Gavriel-Kay.pdf
    • http://loaminoo.linkpc.net/1094098098094094/Heaven-Heaven-Sent-1-by-Jet-Mykles.pdf
    • http://loaminoo.linkpc.net/3093099095090096/Heaven-Heaven-Sent-1-by-Jet-Mykles.pdf
    • http://loaminoo.linkpc.net/1090097096096/Under-Heaven-Under-Heaven-1-by-Guy-Gavriel-Kay.pdf
    • http://loaminoo.linkpc.net/3091095091095097/Three-Made-In-Heaven-Made-in-Heaven-1-by-Elena-Kincaid.pdf
    • http://loaminoo.linkpc.net/2090091092

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