Malicious PDF — malware analysis report

Static analysis result for SHA-256 658a6676cde9fdf2…

MALICIOUS

PDF

69.5 KB Created: 2021-02-20 22:25:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 097389ffc82104f0fb1f3a6d4b19b177 SHA-1: 2f72a11d0020bfde1bfa6124ae3b15c0dce96d9c SHA-256: 658a6676cde9fdf2797db34716bbc8aa4ccf60fbd9f4e9a301ae448dd63e3e2c
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://bologen.ru/wix?keyword=searching+for+summer+literary+analysis+answers PDF link annotation
    • https://cdn.sqhk.co/towinomer/gijhji2/4_immagini_1_parola_6_lettere_norvegia.pdfIn PDF document text
    • http://car-test.pro/expense_report_approval_request8uv5t.pdfIn PDF document text
    • http://com-signto5.xyz/81587504388by93o.pdfIn PDF document text
    • https://nopuxexej.weebly.com/uploads/1/3/4/4/134498230/6830559.pdfIn PDF document text
    • http://rubka.space/najafaruhb2yo.pdfIn PDF document text
    • https://cdn.sqhk.co/dawezizupata/Dhhghjd/43033564886.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/LLojahb/68421899039.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/0idRBUB/rixifofefupaxud.pdfIn PDF document text
    • http://spainsale.pro/gao_veobecn_a_anorganick_chmiaugyu7.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/hcggG04/55449425602.pdfIn PDF document text
    • https://kibibobufusasi.weebly.com/uploads/1/3/4/6/134643218/xufanosemolugo.pdfIn PDF document text
    • https://lamamamim.weebly.com/uploads/1/3/1/6/131606140/fonamalebewebid-taluburizexaku-foxinoximunijex.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/titugome/tijasavetamarosure.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/turiz.pdfIn PDF document text
    • http://bapomel.epizy.com/facebook_auto_like_bot_v_4._0.pdfIn PDF document text
    • http://luzeparuzibez.rf.gd/85022762011.pdfIn PDF document text
    • http://zekipiwozuse.epizy.com/42862220634.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_off0000d167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD167 5592 bytes
SHA-256: 1d2db34ebe9f0e75506e486c225c1c782d1982a648ae669aeef2a4c2c3d56fe0
font_01_sfnt_off0000e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE457 10600 bytes
SHA-256: 09fb0f0929503d3e95f524aca8f506a775e8143caf3628e0d3be0170f40abcea