Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b917e974ad184c…

MALICIOUS

PDF

65.0 KB Created: 2021-03-01 13:19:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 67936f8d8fe26a62e0e6cf6e74926d67 SHA-1: 8f33721b5281dad98762873c92ed3f0d5aa1f146 SHA-256: 88b917e974ad184c10477becc39442c5179f18b8cf4e1aa79869b11660828f8a
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://zajinet.ru/award?keyword=innova+3030f+how+to+use PDF link annotation
    • http://good-production11.site/309114041976bh6n.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/eigsgfU/my_metro_pcs_bill_pay.pdfIn PDF document text
    • https://cdn.sqhk.co/kowumutajaw/giNgg6J/final_fantasy_xv_a_new_empire_crafting_guide.pdfIn PDF document text
    • https://xozilozevaloda.weebly.com/uploads/1/3/5/3/135391373/455454.pdfIn PDF document text
    • http://probnik1313.tech/gokusijapdr7bm.pdfIn PDF document text
    • https://gewukojinita.weebly.com/uploads/1/3/2/7/132712116/wikaninazoseva-jomif-xewapoxa-lazabot.pdfIn PDF document text
    • https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/9558688.pdfIn PDF document text
    • https://nikibowo.weebly.com/uploads/1/3/4/3/134354591/nodarodogejax-fowirijulud-pavuzes-garumikok.pdfIn PDF document text
    • https://bodovusinorone.weebly.com/uploads/1/3/5/3/135347185/vemiseze-gudobom-josusitixa.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/BY2gfWR/super_mario_bros_3_secrets_world_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499299/normal_601f19aedcace.pdfIn PDF document text
    • http://uuuuull.space/aldehidos_y_cetonas_reacciones4bq27.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/vgjhbtD/unofficial_guide_for_rdr2_pro_apk.pdfIn PDF document text
    • http://de-bewertung-889562.icu/horizon_credit_union_membershipso3kq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475588/normal_600c60468b977.pdfIn PDF document text
    • http://verifybadgesbusiness.com/11320357816w70br.pdfIn PDF document text
    • http://1gusevshop.space/aircraft_incident_investigation_report_format2myjt.pdfIn PDF document text
    • http://sodahq.club/fusinujewutejomofivifuboq9sjf.pdfIn PDF document text
    • https://jorevubo.weebly.com/uploads/1/3/4/8/134869484/3685189.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_5fe8cac7b7e56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC214 5124 bytes
SHA-256: 5788413140fec01bdec612317991b65decd658bf743f6cc6a14e1b7091252e34
font_01_sfnt_off0000d39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39D 10400 bytes
SHA-256: 46ab533b58f49b3ec89b879ae8fdb9585cc721c5eca91d17141f2a4134a182af

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