Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c32ad01dc45bb9…

MALICIOUS

PDF

72.5 KB Created: 2021-02-11 16:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7fb9f94d173b30cff9f6052bdc20a622 SHA-1: 20d814db547aed84d621abda636914cd2db8c20f SHA-256: 87c32ad01dc45bb9e26fe56e139ed5f73dccc1d63623815301c433988a319262
252 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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/wix?keyword=clash+royale+hack+apk+ios In PDF document text
    • http://jeruxawi.iblogger.org/free_html_templates_coffee_shop.pdfIn PDF document text
    • https://mavitebe.weebly.com/uploads/1/3/1/1/131163983/wutorajunaz.pdfIn PDF document text
    • https://cdn.sqhk.co/sifujubagis/hdicgdF/76289412033.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/iohfihD/nogilavovobe.pdfIn PDF document text
    • https://jegivobepumo.weebly.com/uploads/1/3/4/4/134444156/ruworapijerofiw.pdfIn PDF document text
    • http://gexedufez.22web.org/11649057849.pdfIn PDF document text
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/bulekadugan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408704/normal_6004b9627306a.pdfIn PDF document text
    • https://xuxasogunoniku.weebly.com/uploads/1/3/1/8/131856570/81ac1.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/hcsfQJD/72658337301.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_600fbae85f139.pdfIn PDF document text
    • https://cdn.sqhk.co/jamolipa/ibghYjg/gagurakufixijusivabeja.pdfIn PDF document text
    • http://memubalejegezur.66ghz.com/2952789937.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/fopafefozakiclckt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369307/normal_60078f353dddd.pdfIn PDF document text
    • https://cdn.sqhk.co/duzokezubeka/hhtlZgd/89367286555.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxisokipefofo.epizy.com/gaxuralogufuka.pdfIn PDF document text
    • http://fijudixisofuzat.rf.gd/xekagejej.pdfIn PDF document text
    • http://jidibavozajo.epizy.com/19914199325.pdfIn PDF document text
    • http://noporotosodapo.epizy.com/punetujel.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_off0000dc26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC26 5092 bytes
SHA-256: da9beb7399ac607e0125b968124ed9287c3d532f19ce788f50d75b645def9fd1
font_01_sfnt_off0000ed78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED78 11828 bytes
SHA-256: 188dca1feb40660bef68c694c6db2349fd26359d32ef3128e501d136e77bfe79