Malicious PDF — malware analysis report

Static analysis result for SHA-256 764216b052e1695c…

MALICIOUS

PDF

96.5 KB Created: 2021-03-24 08:26:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18cedaa3b3c9e2dbd0130ac7a39582c6 SHA-1: ccef51f583c304550a1bdb2b08e2f71c51599ad9 SHA-256: 764216b052e1695c07fc02171eb87740a92ee48706e94babbf5a1893a37456cd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vilenefex.ru/wix?keyword=hash+table+in+python+geeks+for+geeks
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/56ce508d.pdf
    • http://fopokigife.mywebcommunity.org/81610467311.pdf
    • http://wupunekum.getenjoyment.net/sorejagasilevu.pdf
    • https://sosojenanoxo.weebly.com/uploads/1/3/5/3/135316520/5751481.pdf
    • https://cdn-cms.f-static.net/uploads/4421615/normal_6010ad4f72cde.pdf
    • https://cdn.sqhk.co/boxewemutox/hehigd0/driving_car_games_download_free.pdf
    • http://moxilekulina.getenjoyment.net/newiwesigoposeju.pdf
    • https://cdn.sqhk.co/putepirapad/DktWjar/overkill_3_game_is_online_or_offline.pdf
    • https://static.s123-cdn-static.com/uploads/4408476/normal_5ff46e1c5d1c8.pdf
    • https://cdn.sqhk.co/lumolixuwo/lwI0jdO/stachys_hummelo_care.pdf
    • https://cdn.sqhk.co/bidekidarub/c1otkgl/how_to_fill_sphere_ice_cube_trays.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mubefula/bavupudotatilarelesupalug.pdf
    • https://s3.amazonaws.com/wokesabisevo/28102990734.pdf
    • http://resilasijajatil.myartsonline.com/34115390877.pdf
    • https://uploads.strikinglycdn.com/files/d5ac597e-1462-4f2b-9235-a427f29c12ea/46125538645.pdf
    • https://s3.amazonaws.com/fekaduvopigab/49287750107.pdf
    • https://uploads.strikinglycdn.com/files/bdef1900-2580-4701-aa2f-58e248763043/how_many_volumes_of_tokyo_ghoul_manga_are_there.pdf
    • https://uploads.strikinglycdn.com/files/060badf0-c544-4ac1-aeb8-29e8e5023358/29804828544.pdf
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012226.bin
70d72c5fbed30e4a7989343fc732fd92014d88f1e9ba562246e7fcddb76a0a98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12226 5428 bytes
font_01_sfnt_off000134a0.bin
fc5b859f74f6f2be090c959c710facd2ace0bcb29919748bfc5fde895f896d49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134A0 13000 bytes
font_02_sfnt_off00016000.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16000 16060 bytes

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