Malicious PDF — malware analysis report

Static analysis result for SHA-256 630d367cc3680781…

MALICIOUS

PDF

76.8 KB Created: 2021-03-02 03:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5ca6b3c1b5bfe39e69edab194056078b SHA-1: 2a768d0ab85b04e87d1d1ec37e5c515972b7f786 SHA-256: 630d367cc36807813d4db571a26bef57eaf51e2d7b198c1112d771c1418ab9e1
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://fokemale.ru/strik?utm_term=what+are+the+principles+of+prehistoric+sculpture PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448121/normal_6006dc5f497ba.pdfIn PDF document text
    • https://zugatesek.weebly.com/uploads/1/3/6/0/136082504/limovoz.pdfIn PDF document text
    • https://taxezuwijukiwum.weebly.com/uploads/1/3/1/6/131606901/ramukunofixebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480884/normal_6038774ed26e1.pdfIn PDF document text
    • https://nolaxefipox.weebly.com/uploads/1/3/4/7/134740184/wubitokepipubinuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_6023d7f6202d5.pdfIn PDF document text
    • https://bilewemebit.weebly.com/uploads/1/3/5/9/135964156/bawavapapewo_negarijegi_migapevubaz.pdfIn PDF document text
    • https://vefamomapebimid.weebly.com/uploads/1/3/1/4/131406391/nuzekoxepa.pdfIn PDF document text
    • https://kulipimeg.weebly.com/uploads/1/3/2/6/132695915/lenibusola.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416665/normal_603d16912e87c.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/gTC3Ohb/56708798099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zetijub.epizy.com/iphone_6_emulator_for_pc_free.pdfIn PDF document text
    • http://pusugoli.rf.gd/viper_7254v_manual.pdfIn PDF document text
    • http://gesonumakokobal.rf.gd/android_studio_cannot_resolve_symbol_button.pdfIn PDF document text
    • http://jiwenufaxo.epizy.com/disney_plus_samsung_tv_uk_pre_2016.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_off0000f176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF176 5116 bytes
SHA-256: 03558c77d216e0461de24ffcc16f90068313c6020a2a7958cd76bfad2e29bbd6
font_01_sfnt_off000102e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E7 10264 bytes
SHA-256: 903342af5a67262d8ed7f6aa06d76cc233fcc40fc46245b2c813ba33b6d515e2