Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6c1da8f3e300e6…

MALICIOUS

PDF

16.6 KB Created: 2019-05-02 17:37:20 +01:00 Authoring application: mPDF 5.7
MD5: 0cbd94304b843f1535f92baa96e2f617 SHA-1: 662f15f8f1459e9abc1b486ee592d8990f3150ea SHA-256: 4a6c1da8f3e300e6f1b0be2bb165b3e2773c58c825d2721fd8c828bcc2175b59
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the ML classifier strongly indicates maliciousness, the specific intent beyond link distribution is unclear due to the lack of readable document body text and absence of scripts. The primary IOCs are the numerous external URLs embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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/9098096096097090/Immortal-Self-A-Journey-to-the-Himalayan-Valley-of-the-Amartya-Masters-by-Aaravindha-Himadra.pdf
    • http://loaminoo.linkpc.net/3099099099099099/Living-with-the-Himalayan-Masters-by-Swami-Rama.pdf
    • http://loaminoo.linkpc.net/7091098091091/Lily-of-the-Valley-An-American-Jewish-Journey-by-Xianna-Michaels.pdf
    • http://loaminoo.linkpc.net/4097097099094095/Faith-in-the-Valley-Lessons-for-Women-on-the-Journey-to-Peace-by-Iyanla-Vanzant.pdf
    • http://loaminoo.linkpc.net/5099096093093094/The-Country-of-First-Boys-by-Amartya-Sen.pdf
    • http://loaminoo.linkpc.net/5099096092090098/On-Ethics-and-Economics-by-Amartya-Sen.pdf
    • http://loaminoo.linkpc.net/1091092095096092099/-konomie-F-r-Den-Menschen-Wege-Zu-Gerechtigkeit-Und-Solidarit-t-In-Der-Marktwirtschaft-by-Amartya-Sen.pdf
    • http://loaminoo.linkpc.net/1098091096099098/Arielle-Immortal-Awakening-Immortal-Rapture-1-by-Lilian-Roberts.pdf
    • http://loaminoo.linkpc.net/1091093098093095/Arielle-Immortal-Quickening-Immortal-Rapture-4-by-Lilian-Roberts.pdf
    • http://loaminoo.linkpc.net/1099098094099093/Arielle-Immortal-Awakening-Immortal-Rapture-1-by-Lilian-Roberts.pdf
    • http://loaminoo.linkpc.net/9093095095098/Arielle-Immortal-Awakening-Immortal-Rapture-1-by-Lilian-Roberts.pdf
    • http://loaminoo.linkpc.net/1098098090093094/Immortal-of-My-Heart-Immortal-Series-2-by-Alexis-McNeil.pdf
    • http://loaminoo.linkpc.net/2090097096092098/Immortal-Bound-Immortal-Dreams-2-by-Jennifer-Sage.pdf
    • http://loaminoo.linkpc.net/3095096097091098/Immortal-Blood-Immortal-Heart-1-by-Magen-McMinimy.pdf
    • http://loaminoo.linkpc.net/1092092090094095/Immortal-Champion-Immortal-Brotherhood-3-by-Lisa-Hendrix.pdf
    • http://loaminoo.linkpc.net/2096090093090098/Mischief-and-the-Masters-Masters-of-the-Shadowlands-12-by-Cherise-Sinclair.pdf
    • http://loaminoo.linkpc.net/2091096092093091/Masters-at-Arms-Rescue-Me-Saga-0-5-by-Kallypso-Masters.pdf
    • http://loaminoo.linkpc.net/4096090090091090/Himalayan-Odyssey-by-Parker-Antin.pdf
    • http://loaminoo.linkpc.net/2090097093096090/Immortal-Immortal-1-by-Gene-Doucette.pdf
    • http://loaminoo.linkpc.net/3098097091098/Immortal-Immortal-1-by-Gillian-Shields.pdf

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