Malicious PDF — malware analysis report

Static analysis result for SHA-256 19337516a9f1f15c…

MALICIOUS

PDF

19.8 KB Created: 2019-04-30 05:31:07 +01:00 Authoring application: mPDF 5.7
MD5: d5c0c16c359364cf7b073ecefc022047 SHA-1: 09f405786a2ed8d1e9dc5ad6e7ca7ca2340602e1 SHA-256: 19337516a9f1f15c6e944fa10fed8bf740d63013eb2d411ff197d509815f1a4e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/1090095097093098095/Bookclub-In-A-Box-Presents-The-Discussion-Companion-For-Mohsin-Hamid-s-Novel-The-Reluctant-Fundamentalist-by-Marilyn-Herbert.pdf
    • http://loaminoo.linkpc.net/1096095096093097/The-Reluctant-Fundamentalist-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/4098098099093094/The-Reluctant-Fundamentalist-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/1090095097094092097/Quicklet-on-Mohsin-Hamid-s-The-Reluctant-Fundamentalist-by-Elizabeth-Shestakova.pdf
    • http://loaminoo.linkpc.net/1090095097094093093/Mohsin-Hamid-s-the-Reluctant-Fundamentalist-Insight-Text-Guide-by-Keren-Shlezinger.pdf
    • http://loaminoo.linkpc.net/1091093096099094096/Bookclub-In-A-Box-Discusses-Never-Let-Me-Go-by-Kazuo-Ishiguro-by-Marilyn-Herbert.pdf
    • http://loaminoo.linkpc.net/1091090096090096091/Bookclub-In-A-Box-Discusses-The-Time-Traveler-s-Wife-by-Marilyn-Herbert.pdf
    • http://loaminoo.linkpc.net/6093097090096092/Bookclub-in-a-Box-Discusses-Muriel-Barbery-s-novel-The-Elegance-of-the-Hedgehog-by-Marilyn-Herbert.pdf
    • http://loaminoo.linkpc.net/8091091090092093/Bookclub-in-a-Box-Discusses-Khaled-Hosseini-s-Novel-The-Kite-Runner-by-Marilyn-Herbert.pdf
    • http://loaminoo.linkpc.net/1090095090093092090/Bookclub-in-a-Box-Discusses-The-Paris-Wife-by-Paula-McLain-The-Complete-Package-for-Readers-and-Leaders-by-Marilyn-Herbert.pdf
    • http://loaminoo.linkpc.net/1090093099096094091/The-Third-Born-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/5091096098/Exit-West-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/4096094096097092/Moth-Smoke-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/1090095097096091091/Terminator-Attack-of-the-Drone-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/9092098097093099/The-Reluctant-Fundamentalist-by-Cine-Mosaic.pdf
    • http://loaminoo.linkpc.net/1090092094097099095/Discontent-and-Its-Civilisations-Dispatches-from-Lahore-New-York-London-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/4094099094097094/Discontent-and-Its-Civilizations-Dispatches-from-Lahore-New-York-and-London-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/1090095097096095093/Nadia-and-Saeed-Excerpted-from-EXIT-WEST-Electric-Literature-s-Recommended-Reading-Book-252-by-Mohsin-Hamid.pdf
    • http://loaminoo.linkpc.net/7096092098099096/James-A-Michener-A-Critical-Companion-by-Marilyn-S-Severson.pdf
    • http://loaminoo.linkpc.net/1091097091094090092/Showcase-Presents-DC-Comics-Presents-Superman-Team-Ups-Vol-1-by-Len-Wein.pdf