Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17b49ce29362726…

MALICIOUS

PDF

70.3 KB Created: 2021-03-01 18:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 91903651212fc6ff68b8efb586df7039 SHA-1: 9758ffe4644fab7262f8b73336697e124738303d SHA-256: c17b49ce293627266f07f9aef1aaeb608ca5e3ee07915b085cf3bdb4ce1077aa
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • 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://bologen.ru/award?keyword=what+bulb+for+bosch+oven PDF link annotation
    • http://magnitoli-2ekran.site/dicot_and_monocot_root_functionk1pam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491155/normal_5ff773c959a3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455657/normal_5ffc1d03798f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476596/normal_600e83ea5ce66.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/xF9bihG/sonic_adventure_2_soundtrack_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvivemu/agho7ih/labezirozun.pdfIn PDF document text
    • http://hardcreditcheck.info/augmented_reality_in_education25ct3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_5fdbfdc9bc9b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485927/normal_60145211d2c25.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/hdwnwgd/lavibunemotobugesesezu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_6023a10b174ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451766/normal_5fdc5b35ecf27.pdfIn PDF document text
    • https://solatozelejas.weebly.com/uploads/1/3/4/7/134714892/47a8d.pdfIn PDF document text
    • http://vigorutijiwek.22web.org/quadrilateral_properties_matching_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kurejewupom.rf.gd/cant_get_turtle_beach_headset_to_work_xbox_one.pdfIn PDF document text
    • http://miripiwamaza.epizy.com/bizupiza.pdfIn PDF document text
    • http://getetir.epizy.com/11778759641.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_off0000d6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CF 5180 bytes
SHA-256: 114340d7116ada5d76ed13119b4003747117309a7fe44cf54b22da88088c50d7
font_01_sfnt_off0000e87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 10368 bytes
SHA-256: 354543b06277a842c21345a3f53f36c5646f6d2f5c22309f5f29c2247a7f8895

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