Malicious PDF — malware analysis report

Static analysis result for SHA-256 2898de00d1b4db7f…

MALICIOUS

PDF

67.8 KB Created: 2021-02-09 10:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f5b190b52ff522ea548d58dffdf229d3 SHA-1: 890dee95198c0bfa681c19d3c36da5f044a09f81 SHA-256: 2898de00d1b4db7f59fc8273a46cb112e28a7465d2ccb6f18b114290472bf7cd
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://baarspo.ru/aws?utm_term=psikotes+cfit+pdf PDF link annotation
    • http://conicppjry.bid/psychology_in_bengali_freejtj06.pdfIn PDF document text
    • https://zizobisorodevu.weebly.com/uploads/1/3/5/9/135964877/c528e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485001/normal_60183f72302f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474220/normal_5fd6227c16cfc.pdfIn PDF document text
    • https://lefusovu.weebly.com/uploads/1/3/4/0/134040443/bidutowibewuv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_601a2d4d10d93.pdfIn PDF document text
    • https://besukobar.weebly.com/uploads/1/3/1/0/131069863/88ccb4d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383925/normal_5fd61158b467d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419430/normal_600e06cd8bd0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460465/normal_5febf9f50281c.pdfIn PDF document text
    • http://muwusus.iblogger.org/campaign_finance_reform_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527108/normal_5ff0e3ef8a123.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://podapuleleg.epizy.com/accidents_reported_today_york_pa.pdfIn PDF document text
    • http://sapofikij.epizy.com/desuvafisuzubofewe.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/sad_animated_videos_for_whatsapp_status.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_off0000cef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF5 4876 bytes
SHA-256: 1f7a0e475be2c85741be89a92f79f2e5c3955b5d49c42a8e9dd29e2b1d6061f3
font_01_sfnt_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 10236 bytes
SHA-256: abec0ac07caf6a08b6e0aa8c37f4a4e847407729ef85b927587882a6efbfa24c