Malicious PDF — malware analysis report

Static analysis result for SHA-256 1591cb9a2d7227ff…

MALICIOUS

PDF

15.4 KB Created: 2019-05-02 01:17:56 +01:00 Authoring application: mPDF 5.7
MD5: 373eaee0b27fc5480dd94297874b1e00 SHA-1: 4ef534beb3ffc08fd59ca6a345c2021e6d4c0118 SHA-256: 1591cb9a2d7227ff437df1c4068e71b4f74f92c75c9793bbe3e0463e89a5439f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or to direct users to malicious websites. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/2093099097098095/Kiwi-and-the-Missing-Magic-Kiwi-Series-2-by-Vickie-Johnstone.pdf
    • http://loaminoo.linkpc.net/2093099097098094/Kiwi-and-the-Living-Nightmare-Kiwi-Series-3-by-Vickie-Johnstone.pdf
    • http://loaminoo.linkpc.net/2093099097098096/Kiwi-in-Cat-City-Kiwi-Series-1-by-Vickie-Johnstone.pdf
    • http://loaminoo.linkpc.net/1090097091095093090/The-Jaded-Kiwi-by-Nick-Spill.pdf
    • http://loaminoo.linkpc.net/4096095091097098/His-Hired-Girlfriend-Kiwi-Bride-1-by-Alexia-Praks.pdf
    • http://loaminoo.linkpc.net/1098095090094092/Bruce-Goes-Home-Kiwi-Critters-Book-3-by-Donna-Blaber.pdf
    • http://loaminoo.linkpc.net/5091092098098/Adlai-Stevenson-and-the-World-The-Life-of-Adlai-E-Stevenson-by-John-Bartlow-Martin.pdf
    • http://loaminoo.linkpc.net/1090096098091091094/Kidnapped-By-Robert-Louis-Stevenson-Illustrated-FREE-Gulliver-s-Travels-by-Robert-Louis-Stevenson.pdf
    • http://loaminoo.linkpc.net/1091092096097090098/The-Master-of-Ballantrae-by-Robert-Louis-Stevenson-Unabridged-1889-Original-by-Robert-Louis-Stevenson.pdf
    • http://loaminoo.linkpc.net/4095090097093092/Tracks-by-Niv-Kaplan.pdf
    • http://loaminoo.linkpc.net/4098097090095094/Along-the-Tracks-by-Tamar-Bergman.pdf
    • http://loaminoo.linkpc.net/4096090099096096/Tracks-by-Louise-Erdrich.pdf
    • http://loaminoo.linkpc.net/2090091097096090/Destiny-on-the-Tracks-by-Drake-Braxton.pdf
    • http://loaminoo.linkpc.net/1090099092091091/Making-Tracks-by-Scott-G-Gibson.pdf
    • http://loaminoo.linkpc.net/8093095091095/Tracks-to-Murder-by-Jonathan-Goodman.pdf
    • http://loaminoo.linkpc.net/4095098095097/Tracks-in-the-Wild-by-Betsy-Bowen.pdf
    • http://loaminoo.linkpc.net/9097091098099096/Dismantling-the-Tracks-by-D-evad-Karahasan.pdf
    • http://loaminoo.linkpc.net/1093092098094096/Once-Upon-the-Tracks-of-Mumbai-by-Rishi-Vohra.pdf
    • http://loaminoo.linkpc.net/7090092093096094/Tear-Tracks-by-Malka-Ann-Older.pdf
    • http://loaminoo.linkpc.net/2090092092098092/Tracks-To-Love-by-Abbie-St-Claire.pdf

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