Malicious PDF — malware analysis report

Static analysis result for SHA-256 6885ddcb74f81a20…

MALICIOUS

PDF

76.6 KB Created: 2021-03-01 17:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 79f89bfdd8d6641c68e332a2631489c7 SHA-1: 2762a13f21500379cb8dfcd0c3df6160bd608ca1 SHA-256: 6885ddcb74f81a205cfefd9a5910134f2e39607d423275290fb378d098611edb
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://xajibur.ru/award?keyword=para+que+sirve+tomar+te+de+manzanilla+con+limon PDF link annotation
    • http://kvrovk.xyz/arminius_hw_38_manualud3t8.pdfIn PDF document text
    • https://nizevamil.weebly.com/uploads/1/3/2/8/132814567/xetekiv.pdfIn PDF document text
    • http://yoga-fitness.space/whirlpool_bottom_freezer_ice_maker_problems10lyj.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/nomovivuvelarn41.pdfIn PDF document text
    • http://rupekudufim.22web.org/danilibalen.pdfIn PDF document text
    • https://nugiwilog.weebly.com/uploads/1/3/1/3/131384260/darawegilatonuj_ledadem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475215/normal_600890e203ac0.pdfIn PDF document text
    • https://bafuselowazela.weebly.com/uploads/1/3/5/3/135318440/dizupatufob_xajokosin_lesugopogazodu.pdfIn PDF document text
    • https://lesapexif.weebly.com/uploads/1/3/1/6/131637780/godoxojefenij-nunosi.pdfIn PDF document text
    • http://guitar.su/21761664424snrd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421209/normal_5fffcb0595209.pdfIn PDF document text
    • https://cdn.sqhk.co/litalile/egihege/snake_game_mini_project_in_java.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473410/normal_5fdf38bd8dec8.pdfIn PDF document text
    • https://gorasanoso.weebly.com/uploads/1/3/1/8/131859135/doleda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bidasumibave.epizy.com/ipcc_special_report_oceans.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_off0000ecca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCA 5324 bytes
SHA-256: d2a3b0f5e3bbacbf4ee8a2c4f7f77cf8ddf8182674e87c4a02c01fb77c32134f
font_01_sfnt_off0000fed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED9 11280 bytes
SHA-256: c3057b553daada3719fbcbee4e6009d63e1753800f6923c6b75215fc8baac386