Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b1d451efed0b9e…

MALICIOUS

PDF

81.2 KB Created: 2021-03-24 12:21:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d0c4a3ea5cdd1f17896ff8e49f2e961c SHA-1: 43feb42487a57b1df4f5b6ff248481587ea72cd0 SHA-256: 38b1d451efed0b9e91a63170b7b489614e64cda41b01d8cb33ef1a45cd023eb1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=toyota+corolla+gli+2009+specifications+in+pakistan PDF link annotation
    • http://resipowepo.getenjoyment.net/chemistry_lab_apparatus_pictures_and_their_uses.pdfIn PDF document text
    • https://memuvarava.weebly.com/uploads/1/3/1/3/131384606/af1f224f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_5fddcac385fe7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_60159d15310a6.pdfIn PDF document text
    • http://milanbeachs.space/what_age_are_choose_your_own_adventure_books_for8lhes.pdfIn PDF document text
    • https://bugituwixumanuz.weebly.com/uploads/1/3/4/7/134722584/f76d052355d8e48.pdfIn PDF document text
    • http://getporte.xyz/341057971176tsm7.pdfIn PDF document text
    • https://muwewemumefiga.weebly.com/uploads/1/3/0/8/130874681/6569097.pdfIn PDF document text
    • http://sayfelengs.space/quantum_physics_questions_and_answersqoehe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386824/normal_600a738b27c3c.pdfIn PDF document text
    • http://daxavepevepa.mypressonline.com/42217061867.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_36781e4dd9ca49708198a1b656ed5b7c.pdf?index=trueIn PDF document text
    • https://fae5df41-d68b-4d62-9961-cd33801cec7e.filesusr.com/ugd/f52c73_897c402d965c40d48b843360ceba8250.pdf?index=trueIn PDF document text
    • https://161abad2-7de2-49bb-9904-d6e2a620a662.filesusr.com/ugd/2eec94_67312cbcd71c4e11a0da4948e4d31215.pdf?index=trueIn PDF document text
    • https://fe426b01-1dd0-498a-b08e-7ec37e320b94.filesusr.com/ugd/6b45f0_a015a333693f45bdac26ff9d45f5895f.pdf?index=trueIn PDF document text
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_6dcd8ae8bfe945329dfc55154d535168.pdf?index=trueIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_68a48df0b6ed4a5bac973d194a7c5e45.pdf?index=trueIn PDF document text
    • https://13dbc848-c95e-4197-a439-3ae2050b6ee2.filesusr.com/ugd/46bbe5_177737a4e3a54b209e30a8d0c1c8ebd8.pdf?index=trueIn PDF document text
    • https://bed2724e-b6a4-42c6-a365-5b2dc6a82e2f.filesusr.com/ugd/9f087b_0e03ddfc4a644d4893369e28e8cff414.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_off0000fe59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE59 5728 bytes
SHA-256: ef04b7a5f5aac7dd998c6e23aa216ef82fa9df210af4f4ee93bca2d4690d7a11
font_01_sfnt_off000111f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F4 10856 bytes
SHA-256: bf9076cb912100d662742fd5ce6558f7d840d6706699ef68e4dbe66d6a3cb38f

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