Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a46ce2a020f102…

MALICIOUS

PDF

72.7 KB Created: 2021-03-30 18:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf49545b4821f6fb2eb24e31b552bfe8 SHA-1: 981effddd4186ae06f573e4c72f8d7c968011ebb SHA-256: f9a46ce2a020f102e358e590d9ee22df3bc4f6b6baad382b9eca30d2213b6e12
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The primary malicious URL identified is 'https://lozipotod.ru/wix?keyword=unblocked+games+holo+btd5', suggesting a phishing or scam attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://lozipotod.ru/wix?keyword=unblocked+games+holo+btd5
    • https://dotanivim.weebly.com/uploads/1/3/4/7/134705276/1032005.pdf
    • https://cdn.sqhk.co/naxusepimosa/ccjhSfR/volirazit.pdf
    • https://cdn.sqhk.co/sebuwemid/igiaifg/nusezunekubosofadedor.pdf
    • https://static.s123-cdn-static.com/uploads/4382772/normal_60032d7309d3f.pdf
    • https://static.s123-cdn-static.com/uploads/4466675/normal_60008a54961c8.pdf
    • https://dudefusuze.weebly.com/uploads/1/3/4/6/134628774/5695752.pdf
    • https://nawopudupavipe.weebly.com/uploads/1/3/4/8/134856820/raripiwas_lemuzapabax_begagojutipa.pdf
    • https://zusikazokek.weebly.com/uploads/1/3/1/4/131453156/6e14cd1cee.pdf
    • https://static.s123-cdn-static.com/uploads/4426261/normal_5ff684c0a10a8.pdf
    • https://static.s123-cdn-static.com/uploads/4412415/normal_5fed2d6a6002c.pdf
    • https://lopifonexebifi.weebly.com/uploads/1/3/5/9/135986218/4438895.pdf
    • https://cdn.sqhk.co/farafakilof/bhahcih/88339121571.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b0837e58-6fb0-4b2c-a83d-c451c4d85cc2.filesusr.com/ugd/1169b1_4e20e5f4da6742f6a0e78e501aa2625f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/08bfb270-05e3-469a-85fb-9d8baa23569c/a_simple_favor_review_nytimes.pdf
    • https://uploads.strikinglycdn.com/files/ab441a32-d9dd-4b4f-bd12-9af90fd8b1c5/magic_mouse_gestures_not_working_ipad.pdf
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_b6732b5361ad43babb99ebd9f79b0fd8.pdf?index=true
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_a1fe9b2e5eb84f7a996ea35fba978957.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fe8f4b87-69e9-4b53-97c1-a3ffa380306a/microelectronic_circuits_6th_edition_solution_manual.pdf
    • https://6ce95562-7558-49ee-a7b0-b3003db3b0e9.filesusr.com/ugd/d13e1f_24933d646576440bacb188ea6e0990eb.pdf?index=true
    • https://1c54689f-8f60-44d8-8d81-b144d6ea8ada.filesusr.com/ugd/787b0a_6d59e9c6fd7745f9a2a8a6242e43e45a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/10035777-17b3-4c60-9902-ff51b86e6cf4/24309457268.pdf
    • https://945c5b1a-9feb-4a08-b72d-c905ca1b1520.filesusr.com/ugd/27135d_756a3e4ae0814f77b019efdb63d796d3.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e134.bin
8c4b702040aefaf586f125df045d3bbd39fdadd6ed8736c836fe008dc7bef28b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 5576 bytes
font_01_sfnt_off0000f40d.bin
887924e5f14fcfc9c00dfd1ee52c6ef33847643f98fe2bc55fc513ba5311b970		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF40D 9868 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.