Malicious PDF — malware analysis report

Static analysis result for SHA-256 793ebd6d84f59afb…

MALICIOUS

PDF

93.7 KB Created: 2021-03-27 10:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 01221cd31719e88a72c0e59f5fd99d97 SHA-1: e7fdcb793099b16e5dbc41ed5af84a8c50b40976 SHA-256: 793ebd6d84f59afb7475f82e3af22e45f9732cff01f405f3b207393c0bbbe74c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting and exhibiting link farm characteristics, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains references to 'Sylvia plath daddy criticism' and 'wkhtmltopdf', which are likely decoys or part of the obfuscation rather than indicative of the document's true malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://botokaw.ru/strik?utm_term=sylvia+plath+daddy+criticism PDF link annotation
    • http://nerazegizetikam.getenjoyment.net/jofusuguza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_604016333a7f9.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/causerie_ducative.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478402/normal_6038736300e28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369313/normal_60400069ab636.pdfIn PDF document text
    • http://kuliwegi.sportsontheweb.net/therese_bertherat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_600fecf518a99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418755/normal_604d96f09857e.pdfIn PDF document text
    • https://cdn.sqhk.co/vikojovowoso/idjg9hj/monsta_x_offline_kpop_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/AgizTii/kuvijamipoweti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bitujiduruv.myartsonline.com/ryobi_2000_psi_pressure_washer_parts_home_depot.pdfIn PDF document text
    • http://lawazujazigefon.epizy.com/equilid_50_bula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e841131-9b2b-4594-b8bc-46cbd5b33a22/denivazuwapibilegaluku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65cd0739-4f9f-4306-8413-38131f54b6cd/is_there_a_30_piece_nugget_at_chick_fil_a.pdfIn PDF document text
    • http://vizepojuduw.rf.gd/43073316611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e47190dd-6de8-41af-97cc-654b63d07104/watch_call_me_by_your_name_online_free_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd2a8927-03d9-4c45-aa2d-ac8965cbc8ee/sukorusoxuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1f5c51-8719-48bf-bdfb-e2df4b33f20b/90764611677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/398b41ca-64b0-4eff-9d4c-66476fec112f/mukusijivegodulofedija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411135a4-cd19-4f05-aae4-fc59791fecc2/46678412462.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12543 5032 bytes
SHA-256: eef4c7370ed898eb444928537ceac5700690d893a1754b4ed9db1a58c4326f17
font_01_sfnt_off0001365e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1365E 10880 bytes
SHA-256: 1d67956d343462f9aac459eb706438504945af759ca6f96c37cb3e7d62bd7ce1
font_02_sfnt_off00015b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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