Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe124ecd670226f…

MALICIOUS

PDF

77.6 KB Created: 2020-12-31 05:00:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 144c202787c8dba99379bbff3b7ae146 SHA-1: 7bb35862c6cc2e3b0efe4cc296066133fa131ff5 SHA-256: fbe124ecd670226f7cd3c0ded8f7d46e53e0645f9c2098b2723c0a4c2365e1c6
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/123?utm_term=world+news+daily+report+atomic+bomb In PDF document text
    • https://static.s123-cdn-static.com/uploads/4457298/normal_5fdce5812e93c.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/hbhajdl/8369877358.pdfIn PDF document text
    • https://popepinasi.weebly.com/uploads/1/3/4/8/134892117/ditolepifa.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/mivawarezin_pemupib_bimugozutudufib_kadesode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446019/normal_5fb846f7ee4f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5fad9bb7ab377.pdfIn PDF document text
    • https://bitokulizawefe.weebly.com/uploads/1/3/4/6/134684274/d1f7c53ca2.pdfIn PDF document text
    • https://dajikunizitawis.weebly.com/uploads/1/3/1/1/131163857/zixebokuxozabiwusaji.pdfIn PDF document text
    • https://rasagarus.weebly.com/uploads/1/3/4/4/134452949/seribuxelatidojapape.pdfIn PDF document text
    • https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/vodamaxagi.pdfIn PDF document text
    • https://guditeni.weebly.com/uploads/1/3/4/5/134529862/7864382.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc76534e-af3e-4f79-af06-91f44371a43f/pifokagasopipawudilopavut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c951b2-f99b-40bb-9293-862826c26ec6/70902918994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e582b57e-771c-4f91-9b12-5e9c89f07658/umc_hospital_lafayette_la_phone_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b5d1dbf-3236-4592-8dd6-ef23c9bce1ba/92044788601.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_off0000f397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF397 5564 bytes
SHA-256: 2452487aea0586f6073b4dd995b6e105aee14e04c3c8a2d4060bb0a0b76c75bc
font_01_sfnt_off00010685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10685 10328 bytes
SHA-256: dddc426a854525b3b42ed403b9b73e0afd5ff24377f874b1e824f8531f9b2882

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