Malicious PDF — malware analysis report

Static analysis result for SHA-256 552def1cac57a72e…

MALICIOUS

PDF

16.3 KB Created: 2019-05-01 20:39:53 +01:00 Authoring application: mPDF 5.7
MD5: f4daa75abaef1d0bc5ede15a867cfc62 SHA-1: e5fd076e1337446c2887caf0251b207b90bf8681 SHA-256: 552def1cac57a72e7dbbc70c4b07b13aded247e9e9ac7febc697dedf9aaf10b2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the specific intent of the links is unclear, the sheer volume and the heuristic firing suggest a malicious purpose, likely to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/1093094090099091/Dark-Hunger-The-Brethren-2-by-Sara-Reinke.pdf
    • http://loaminoo.linkpc.net/1093094092091098/Dark-Thirst-The-Brethren-1-by-Sara-Reinke.pdf
    • http://loaminoo.linkpc.net/5099096092099/The-Immortals-After-Dark-Collection-Dreams-Of-A-Dark-Warrior-Demon-From-The-Dark-A-Hunger-Like-No-Other-Immortals-After-Dark-2-10-11-by-Kresley-Cole.pdf
    • http://loaminoo.linkpc.net/1095092094096090/Death-s-Sweet-Embrace-Dark-Brethren-2-by-Tracey-O-39-Hara.pdf
    • http://loaminoo.linkpc.net/4095090092097090/Enter-the-Brethren-Brethren-of-the-Coast-1-by-Barbara-Devlin.pdf
    • http://loaminoo.linkpc.net/4096097097090/Brethren-Brethren-Trilogy-1-by-Robyn-Young.pdf
    • http://loaminoo.linkpc.net/5095095092095093/Hunger-Games-A-Detailed-Summary-of-Hunger-Games-Book-1----Along-With-Analysis-And-Fun-Quizes-Hunger-Games-Hunger-Games-Trilogy-Hunger-by-Mr-Summary.pdf
    • http://loaminoo.linkpc.net/3093091092090095/Dark-Parties-by-Sara-Grant.pdf
    • http://loaminoo.linkpc.net/2099093098098093/Dark-Parties-by-Sara-Grant.pdf
    • http://loaminoo.linkpc.net/4094099096090092/Short-Dark-Oracles-by-Sara-Levine.pdf
    • http://loaminoo.linkpc.net/1098093095091090/Dark-Summer-Dawn-by-Sara-Craven.pdf
    • http://loaminoo.linkpc.net/7095092092095096/The-Dark-Princes-The-Ravager-Chronicles-2-by-Sara-Page.pdf
    • http://loaminoo.linkpc.net/3091091097094093/Carla-s-Cloud-Catastrophe-by-Beth-Bence-Reinke.pdf
    • http://loaminoo.linkpc.net/1099095096091099/Bright-Burns-the-Night-Dark-Breaks-the-Dawn-Duology-2-by-Sara-B-Larson.pdf
    • http://loaminoo.linkpc.net/1097091099098097/The-Hunger-Hunger-1-by-Whitley-Strieber.pdf
    • http://loaminoo.linkpc.net/3095099094099095/Dead-Hunger-Books-1-5-Dead-Hunger-1-5-by-Eric-A-Shelman.pdf
    • http://loaminoo.linkpc.net/4094094097095098/The-Hunger-Games-The-Hunger-Games-1-by-Suzanne-Collins.pdf
    • http://loaminoo.linkpc.net/4096099092092/The-Hunger-Games-The-Hunger-Games-1-by-Suzanne-Collins.pdf
    • http://loaminoo.linkpc.net/5095095091098/The-Hunger-Games-The-Hunger-Games-1-by-Suzanne-Collins.pdf
    • http://loaminoo.linkpc.net/4091095090091099/The-Hunger-Games-The-Hunger-Games-1-by-Suzanne-Collins.pdf
    • http://loaminoo.linkpc.net/5095095092095093/Hunger-Games-A-Detailed-Summary-of-Hunger-Games-Book-1----Along-With

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