Malicious PDF — malware analysis report

Static analysis result for SHA-256 204954676aa1c5f7…

MALICIOUS

PDF

74.6 KB Created: 2021-02-18 08:41:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: edf2f170f46c177887f0c27b727fa100 SHA-1: 2db7260365a1b4e8609c15790d108acc079815c4 SHA-256: 204954676aa1c5f766f634701ada995c4da9577ff160bcce6eaffcb2191df55f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wb?keyword=is%20word%20power%20made%20easy%20useful%20for%20cat PDF link annotation
    • https://xidelesa.weebly.com/uploads/1/3/4/4/134498911/senajov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415944/normal_600fb1dd8d829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486535/normal_5fd1fd85487b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448548/normal_5ffc851115a71.pdfIn PDF document text
    • https://bamususifilozok.weebly.com/uploads/1/3/1/3/131383301/mawazuzodituka.pdfIn PDF document text
    • https://buzelobuledu.weebly.com/uploads/1/3/1/3/131397981/vitapikam_durazuxavipi_matofeje_mapupuvuvibisig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491671/normal_600ca5e95639b.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/5jcHicI/mawowidejatabidufel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486745/normal_5fd7c252b1a7d.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/idbhh7i/72106659654.pdfIn PDF document text
    • https://fukagopesuzidad.weebly.com/uploads/1/3/1/3/131381553/9803535.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/vabevazunaxasu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452392/normal_5ff9c8feccfe1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/begijufadi/ok_google_weather_report_for_cincinnati_ohio.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/careers360_magazine_subscription_form.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_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 5432 bytes
SHA-256: ff66b075ace78c4de1017418774923e3146fd694143799911b14f9687dbaf833
font_01_sfnt_off0000f8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D5 10852 bytes
SHA-256: bae5ec9444bb0da8ba1ba19ac92ebe23a16b4b08977bf4d44d47e3ea92cb2794