Malicious PDF — malware analysis report

Static analysis result for SHA-256 86358a678a37dd8a…

MALICIOUS

PDF

80.2 KB Created: 2021-06-07 02:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f3d206b1ca4cffce61021374fe283285 SHA-1: 2c958bc3a42e076a6ad8fe0fbdcdc7378d62d0cc SHA-256: 86358a678a37dd8a905435df8038866ad062e947a026061737c22a3a89a00fa4
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of phishing campaigns aiming to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9772

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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
  • 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://synerhu.ru/pbw?utm_term=travail+et+%25C3%25A9nergie+potentielle+de+pesanteur+exercices+corrig%25C3%25A9s PDF link annotation
    • https://fakebomazeb.weebly.com/uploads/1/3/1/4/131453402/4486477.pdfIn PDF document text
    • https://kakizizutubune.weebly.com/uploads/1/3/4/3/134351089/sakozi-tonoxu-giwepewez-fipazuliropesej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482619/normal_6066ab0f54f4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460678/normal_5fd7e26d73c3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wefolevemud.pbworks.com/f/jitawozolomafomolifa.pdfIn PDF document text
    • http://garigor.pbworks.com/w/file/fetch/144424734/gakudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97c290c4-f30f-47a4-b0a0-16c6e2192136/lovevusididu.pdfIn PDF document text
    • http://gejigavowule.pbworks.com/w/file/fetch/144714378/how_to_service_a_paslode_nail_gun.pdfIn PDF document text
    • http://kunozulig.pbworks.com/f/bilal_ibn_rabah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a34108e0-f33c-448e-ae44-ab3639e08e6f/nimurulevotitubilufujawi.pdfIn PDF document text
    • http://betifabito.pbworks.com/w/file/fetch/144756258/fifty_shades_of_darker_full_movie_dual_audio_download_filmyzilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5aaf9fcf-a60e-4bd0-b249-5b2ba8c9e299/minusasuxawidiparituvitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ef1ecde-c8cb-4b1b-9c7b-6256ec967b7f/buriwidokogemimafufujusat.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/w/file/fetch/144427326/zudado.pdfIn PDF document text
    • http://molitutolu.pbworks.com/f/how_to_download_music_on_spotify_not_premium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dfad6b8-32eb-48a4-9996-0783b429d92b/what_type_of_plate_boundary_is_the_philippines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3f95ed-c192-4575-9687-db374d1584f8/98899544377.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/483e98ed-3421-4c06-b840-f9aeaf841001/why_is_my_dish_remote_not_working_on_my_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/208911be-7519-4bd4-8b37-bb389c9751fc/58712959462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54a7228-2788-45f6-ac41-270d33b67e22/best_exercise_equipment_to_strengthen_legs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c4c6187-1db1-45c9-8222-b9f5089ee1d9/sims_3_macbook_pro_2015.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0A 5344 bytes
SHA-256: 60f156d9c97c677ff6e2424a1acc4ec281024ed10dc1679c835e8cbe01ccf03f
font_01_sfnt_off00011dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DFF 13256 bytes
SHA-256: 918943886f677af6855656511a147975efefde6bd2f72463896a70023f94a154

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