Malicious PDF — malware analysis report

Static analysis result for SHA-256 db87b90fc37b8309…

MALICIOUS

PDF

13.3 KB Created: 2019-05-05 15:52:32 +01:00 Authoring application: mPDF 5.7
MD5: a30851e29d5b1aa488d12d09b3cb376f SHA-1: 7c5d4a1613b77a1f8b1dfc6acc97e245c699e68d SHA-256: db87b90fc37b8309b65973cf39e233cbd397b7da881cd146d87b7dba664aeda2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to external PDF files, characteristic of a link farm. The ML classifier also flagged this document as malicious. While no scripts were extracted, the primary attack vector appears to be directing users to a network of potentially malicious or deceptive content via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/9099099099096093/Nadja-on-My-Way-Glb-by-Nadja-Salerno-Sonnenberg.pdf
    • http://loaminoo.linkpc.net/7094095099095/In-Light-of-Shadows-More-Gothic-Tales-by-Izumi-Kyoka-by-Ky-ka-Izumi.pdf
    • http://loaminoo.linkpc.net/4093096093092093/Tomorrow-When-the-War-Began-The-Tomorrow-Series-1-by-John-Marsden.pdf
    • http://loaminoo.linkpc.net/1095095092093091/Yesterday-s-Tomorrow-Tomorrow-s-War-Book-1-by-G-W-Pomichter.pdf
    • http://loaminoo.linkpc.net/3093090092096/Tomorrow-When-the-War-Began-Tomorrow-1-by-John-Marsden.pdf
    • http://loaminoo.linkpc.net/1096093091099094/Tomorrow-and-Tomorrow-by-Charles-Sheffield.pdf
    • http://loaminoo.linkpc.net/2098090092093090/Everyone-s-Getting-Married-Vol-1-by-Izumi-Miyazono.pdf
    • http://loaminoo.linkpc.net/7097091094090099/La-Fleur-Mill-naire-Vol-13-by-Kaneyoshi-Izumi.pdf
    • http://loaminoo.linkpc.net/1096097099097094/Oresama-Teacher-Vol-1-by-Izumi-Tsubaki.pdf
    • http://loaminoo.linkpc.net/6091093097091094/Hikari-no-densetsu-Tome-4-by-Izumi-As-.pdf
    • http://loaminoo.linkpc.net/6097092096092097/Haru-no-Ogawa-wa-Dokidoki-Suruyo-by-Mio-Izumi.pdf
    • http://loaminoo.linkpc.net/2098098094091098/Japanese-Gothic-Tales-by-Ky-ka-Izumi.pdf
    • http://loaminoo.linkpc.net/3099095099095096/The-Magic-Touch-Volume-6-by-Izumi-Tsubaki.pdf
    • http://loaminoo.linkpc.net/4097095093094099/The-Guilty-Volume-01-Verdict-by-Katsura-Izumi.pdf
    • http://loaminoo.linkpc.net/4093091099099094/Monthly-Girls-Nozaki-kun-Vol-1-by-Izumi-Tsubaki.pdf
    • http://loaminoo.linkpc.net/1099096098098098/Monthly-Girls-Nozaki-kun-Vol-1-by-Izumi-Tsubaki.pdf
    • http://loaminoo.linkpc.net/1094098091092096/Seiho-Boys-High-School-Vol-1-by-Kaneyoshi-Izumi.pdf
    • http://loaminoo.linkpc.net/4096093093096098/Claiming-The-Prize-by-Nadja-Notariani.pdf
    • http://loaminoo.linkpc.net/7090096098096097/Breton-Nadja-by-Roger-Cardinal.pdf
    • http://loaminoo.linkpc.net/1091093093090096093/Verr-ckt-vor-Ha-Krimi-by-Nadja-Timberland.pdf

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