Malicious PDF — malware analysis report

Static analysis result for SHA-256 452f2cdbc2f5e3ff…

MALICIOUS

PDF

71.3 KB Created: 2021-02-21 20:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0faf159cf143d2ead0ed489b6084100a SHA-1: 468445569635ddad450dc60550f2549d382c3c0a SHA-256: 452f2cdbc2f5e3ffb801fe020bcb53bad3d0fab10ba5c41e3086eee1a5942775
186 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
  • 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://druttle.ru/wix?keyword=grupos+de+oaxaca+que+tocan+chilenas PDF link annotation
    • https://dofigova.weebly.com/uploads/1/3/0/8/130813881/9072269.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/hihbgd5/nakawujenefulaxoremuw.pdfIn PDF document text
    • https://vetinuvejozijuk.weebly.com/uploads/1/3/4/7/134745319/4423855.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/JjaSL3f/26282060633.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/n9jgzJ6/29915667989.pdfIn PDF document text
    • https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/f7c311.pdfIn PDF document text
    • https://jowetirepenu.weebly.com/uploads/1/3/1/3/131383619/suzisopiwigatinav.pdfIn PDF document text
    • https://fiwirozubaxezu.weebly.com/uploads/1/3/4/6/134659856/mizazofexak.pdfIn PDF document text
    • https://mogeletonedilo.weebly.com/uploads/1/3/1/4/131482944/018d491036f8.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/8675456.pdfIn PDF document text
    • https://sazavilekin.weebly.com/uploads/1/3/4/8/134851962/xedutejuwuxuwom.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/mpjjogh/bipapedaxigevisolutaj.pdfIn PDF document text
    • https://cdn.sqhk.co/ragonujip/TjdpAid/toxebijopedile.pdfIn PDF document text
    • https://xukifunizagopo.weebly.com/uploads/1/3/4/0/134013279/xedevebove.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/dupula/appraisal_form_format_in_excel.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_off0000d8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DC 5388 bytes
SHA-256: 5da1dd123d6a19b167f876541a64c6f1d6922901f8c73dc8901134b12a214fac
font_01_sfnt_off0000eb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2B 11052 bytes
SHA-256: b571de0e1d019e3e228d3e91e524e0b8d1bb8d4f03a14e13e475c0820a87ba95