Malicious PDF — malware analysis report

Static analysis result for SHA-256 94fe98eaef689b90…

MALICIOUS

PDF

80.2 KB Created: 2021-03-19 06:09:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f18cfbe91796ae68adf4d76634badfd5 SHA-1: 6a8af61448f74dd6b682e7a098767b92816018f7 SHA-256: 94fe98eaef689b907d234356dad4ae8b63540bcb3ea550241f04e0db6b5e7c0d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a redirector to a suspicious domain ('vilenefex.ru'). Heuristics indicate the PDF is a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving redirection to a malicious site.

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://vilenefex.ru/strik?utm_term=battery+tender+plus+amazon PDF link annotation
    • http://rugegav.mywebcommunity.org/bodybuilding_chest_workout.pdfIn PDF document text
    • http://hallhq.xyz/rixulinaavb2t.pdfIn PDF document text
    • http://openchambre.xyz/kenmore_he5t_drain_pump_replacement7bzzf.pdfIn PDF document text
    • http://moneyindia.site/pikubopewarax6wzjm.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/how_to_make_baby_food_in_magic_bullet.pdfIn PDF document text
    • http://vykupavto54.ru/794678366613ci66.pdfIn PDF document text
    • http://ygrash.website/tuliloteqsgmj.pdfIn PDF document text
    • http://wisopenudaris.22web.org/jiwomigobuzaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a40d4a58-de8f-4c44-94b3-c51fc975168f/braun_coffee_machine_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03e49d6-a3bd-49d2-adc8-b1568825cf2d/how_to_connect_to_jabra_freeway.pdfIn PDF document text
    • http://redilupabisaxo.rf.gd/28747425722.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/latex_technical_report_document_class.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bccf7be-375f-4525-8040-d46c4b5aa662/garupa.pdfIn PDF document text
    • http://naxixexofeveto.epizy.com/photoshop_event_poster_template_free.pdfIn PDF document text
    • https://ca30e0e0-ecf2-44ab-b6a2-fe26291458be.filesusr.com/ugd/34e21e_4fa2c3daafea4ccc80cd216d1ad675d4.pdf?index=trueIn PDF document text
    • http://reronagut.epizy.com/cisco_ccna_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f066de0e-04a4-44cf-81c4-9808e8e1920b/kenwood_tm-d710ga_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/sutevegutugojugi.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/arturia_microfreak_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/lagu_batak_arvindo_asa_martua_ho.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_faab61f968d149faa28aad0b4cc89f8f.pdf?index=trueIn PDF document text
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_b6442fb7217b4fb68d6c78fe50bf9f65.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD0 5304 bytes
SHA-256: 8a7857b2db5cb6927df0324f29f2f64ab9fb4ea528708689f0c00d505ddad318
font_01_sfnt_off00010dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD3 11168 bytes
SHA-256: 48a1f6ec0aa0781e9115fb791fc51f73c1af3322de809f6bae1e62aacb93bdea

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