Malicious PDF — malware analysis report

Static analysis result for SHA-256 6806acdd7d2d7732…

MALICIOUS

PDF

69.3 KB Created: 2021-02-26 19:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 954e4e0a6e81ef5b75e8448711474149 SHA-1: 13071acb260fffaa5769f25d944011f1ff4ac5cc SHA-256: 6806acdd7d2d77328e5719c9e40eeae6408eee23bb7be56c8034d385dd79cd42
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://nipisod.ru/award?keyword=tipos+de+comunicacion+empresarial+externa PDF link annotation
    • https://wamukefak.weebly.com/uploads/1/3/5/3/135324497/df3109609219e.pdfIn PDF document text
    • https://lemidedimiba.weebly.com/uploads/1/3/0/8/130874299/eaa6e90.pdfIn PDF document text
    • http://appeal-ig.com/povakoduvivomisiketsr1on.pdfIn PDF document text
    • https://zudiwimuda.weebly.com/uploads/1/3/1/4/131438079/zewaze.pdfIn PDF document text
    • https://juxufosuzuvol.weebly.com/uploads/1/3/1/4/131437906/neragunila.pdfIn PDF document text
    • http://giocodigital.space/ashrae_2012_duct_fitting_databasepanla.pdfIn PDF document text
    • https://towizitubozabo.weebly.com/uploads/1/3/5/4/135400713/7c37690864b.pdfIn PDF document text
    • http://lovechat24.club/walmart_corporate_social_responsibility_report_2017cf6r0.pdfIn PDF document text
    • https://damatabawapu.weebly.com/uploads/1/3/1/3/131379320/467f896e.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/OLjef0D/train_taxi_mod_apk_vip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jabodegodonirad.atwebpages.com/food_safety_net_services_phoenix_az.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_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 5236 bytes
SHA-256: d19eaa68b2de949e174cd961214741a0a7309d45d7bc89db93c72ba2fda661e9
font_01_sfnt_off0000e352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE352 11024 bytes
SHA-256: a53ee5f60a47eae111b7414c4c6206381adfd35775e499ebcbc499efe0a6853d