Malicious PDF — malware analysis report

Static analysis result for SHA-256 c163873aac33842d…

MALICIOUS

PDF

68.3 KB Created: 2021-01-29 00:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fbbac4987765a3737e74c57d5842c4dc SHA-1: bf27348256aa41403ca7aef4a6aa64f2bb91ba04 SHA-256: c163873aac33842de5b8d493ae3c40c833ab4ac6e2563bd7f02002573402579b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=movie%20music%20ringtone%20download%202018 PDF link annotation
    • http://jotewelife.iblogger.org/tuvamotideludalaz.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/QHWdhfr/vemuzogosagawivij.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/ihbhcjh/96225183603.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_600ea63e45203.pdfIn PDF document text
    • http://drovazvenigorod.ru/wheel_race_apk_modlfber.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/sjijhZP/business_plan_template_for_kids.pdfIn PDF document text
    • http://thepropheticapp.com/nasb_bibleclwcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445877/normal_5ffca362ca4dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458417/normal_5ff2600ac3f29.pdfIn PDF document text
    • http://in-arenas.com/20510074103w9ber.pdfIn PDF document text
    • http://domainlimax.xyz/23254692002mjsa3.pdfIn PDF document text
    • http://vorecan.space/puwunogideb5qds.pdfIn PDF document text
    • https://cdn.sqhk.co/xewasejeve/hWmpiiu/buxuver.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410433/normal_5fe38fdd2e523.pdfIn PDF document text
    • http://balifruit.com/space_paws_guide_62k90gi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476783/normal_6003a1e5493ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavuzolu.epizy.com/free_simple_cash_flow_statement_template.pdfIn PDF document text
    • http://wanikokod.epizy.com/magonaperegav.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_off0000cba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA0 5936 bytes
SHA-256: 1049ebc33221fb00258dc499a9e1f38c961006d2e735d9a7ccf4df1f03a74f80
font_01_sfnt_off0000dfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDB 10804 bytes
SHA-256: af23eec4b994ecbb32ec80359dab8f48074a7f6c677e1d038054c859a9a535d9