Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03340ce046d7e1b…

MALICIOUS

PDF

66.0 KB Created: 2021-02-07 09:17:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5afd2e98dc019c2dfdda7803ae0fa600 SHA-1: e70e230d8c9ee0743f09e332e214ff8deb585bff SHA-256: d03340ce046d7e1bc14cb233b08b81c9b67eafac67285999efaa33c6911993f1
224 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
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://yafferge.ru/aws?utm_term=ecg+velez+pdf+gratis In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470975/normal_5fd9bb6863566.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475847/normal_5fdc8c4b5ea0c.pdfIn PDF document text
    • http://armlur.space/loxipamuwauwnhy.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/wAjhihZ/android_auto_2._9_apps_uk.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/all_pattern_programs_in_javax36nu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480155/normal_5fceac392f36c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380226/normal_5fe0d843b4575.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475741/normal_5fe48178e89a9.pdfIn PDF document text
    • http://delayikapy.xyz/246486903620ns8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446166/normal_6001e86296e1f.pdfIn PDF document text
    • https://cdn.sqhk.co/gobopovupav/da1gijh/pocket_veto_meaning_in_malayalam.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/iheIYI2/fufutetifomesebobi.pdfIn PDF document text
    • http://magazinrf.xyz/search_everything_32_biteky0l.pdfIn PDF document text
    • https://cdn.sqhk.co/mudonisogub/jfcLlhb/accuradio_most_oldies.pdfIn PDF document text
    • http://damvglaz6.xyz/townsville_crash_bruce_highwayty36w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC57C 5388 bytes
SHA-256: 79792c43b686c4534da64c83ad82196dd4942dfbe7c5054a4227f512475c99e8
font_01_sfnt_off0000d7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FC 10728 bytes
SHA-256: 38e1161a9894e12a5ad6e6ed47f3dbafef1b24e12dfc312555f85b4566b9d863