Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2893060c1f3613c…

MALICIOUS

PDF

70.7 KB Created: 2021-02-09 15:34:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a8dde797e6348c79bc92c69a85326c36 SHA-1: 1fbf859db9fc6395c2d25cf06af27212cf885a23 SHA-256: a2893060c1f3613c287d5d925b95e09561fc0271cfdc7116c2abb0493e11abe3
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/123?utm_term=time+warner+cable+locations+greensboro+nc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5fd68a3c57538.pdfIn PDF document text
    • http://pixelbarista.com/tudosiwapipewkh42.pdfIn PDF document text
    • http://chebsvet.ru/zeboladapakowesipovero3gu5p.pdfIn PDF document text
    • http://zeweduzu.iblogger.org/describe_your_greatest_achievement_answer.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/ZXYjVcN/vikonurukibamovujus.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/wzjcnxG/red_blue_and_green_make_white.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376852/normal_6018f94781fb3.pdfIn PDF document text
    • http://c-advance.space/les_acadmiades_de_rangueiltvdlb.pdfIn PDF document text
    • https://betijefozivur.weebly.com/uploads/1/3/0/7/130776077/bunajivewiwuweruwopa.pdfIn PDF document text
    • http://m-ryanaf.site/1698293899773oqr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457312/normal_6005d8c11a8bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411220/normal_5fe0623867cd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393488/normal_5ffa2f647d0e0.pdfIn PDF document text
    • http://elerctum.org/printable_weekly_timesheets_templates7mtr8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bobamexexaru.rf.gd/33851273466.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_off0000d58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58F 5300 bytes
SHA-256: a9c8c531df0c3c6323e1564c4de3c9850cb06d3995a872d4b4445c787cfb49e4
font_01_sfnt_off0000e78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78B 11244 bytes
SHA-256: 220e16ac1c1e637b7a3ab590263a7331b90a4a4da8a06cc87d08e80b92041e1f