Malicious PDF — malware analysis report

Static analysis result for SHA-256 564d7f767cbfce2e…

MALICIOUS

PDF

67.3 KB Created: 2021-03-20 09:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0a25f69b110dfb0ac0e2e6ab6639611f SHA-1: b6155a7800aaeddd97d26dea4405d206d3b63d5e SHA-256: 564d7f767cbfce2e81e1b4b980a8b65ef8421dea73822e9cf64a395c29a6ceea
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL 'https://ponafet.ru/123?utm_term=chammak+challo+j+star+song++pagalworld' suggests a phishing or malware distribution lure, disguised with a song title. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the PDF is part of a link farm on disposable hosting, commonly used for malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/123?utm_term=chammak+challo+j+star+song++pagalworld PDF link annotation
    • https://cdn.sqhk.co/godajaxox/gTMgdja/overdrive_premium_game_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/Wl7gdji/koginurolanozof.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/hrNjfid/povetuvorezodixu.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/ZDeijn8/free_download_layout_for_instagram.pdfIn PDF document text
    • https://cdn.sqhk.co/xogeloke/a8jgAEm/57988260106.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/geib0ii/best_tuner_for_2018_f250_6._7_powerstroke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_89147e59c97c455091294a31882d606a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/egypt_powerpoint_template.pdfIn PDF document text
    • http://ruredat.rf.gd/data_fix_apk.pdfIn PDF document text
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_a913d935781b4ab18cba944f01e1b743.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/84454437185.pdfIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_9ab2ce47a238401ca824f8e04433aa9f.pdf?index=trueIn PDF document text
    • https://56a79910-2d97-40e4-a1df-bca3b17021d7.filesusr.com/ugd/2721fc_bace6f39f8bc440db6e80a7bad8d3620.pdf?index=trueIn PDF document text
    • http://gujupikisikali.epizy.com/35075778971.pdfIn PDF document text
    • https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_70880992ec3943ce95244adc3270ac3b.pdf?index=trueIn PDF document text
    • http://zekubegem.epizy.com/vabosexokivijasur.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/variables_and_expressions_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/mefuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/lijef.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/67648790860.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c97f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97F 5624 bytes
SHA-256: d853d66077d82f4bdb856c43e06493fa85613abdb35343b93f6de2f95eaea08b
font_01_sfnt_off0000dc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC81 10392 bytes
SHA-256: 3d90b0f68171a931f7b98ad1c61afd01e88b069872778d216b262195f162c8e0

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