Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c068e41556249cd…

MALICIOUS

PDF

71.4 KB Created: 2021-02-11 19:00:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6756db79e01ebd9f155cfeb4c6d1eb48 SHA-1: 8e2eca790ae11bd35422072a3bb499eff8759214 SHA-256: 3c068e41556249cd19d32370d3e6599b9bbef584fdbf35eaaa9a5f048b2ee644
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=popee+and+kedamono+fanart PDF link annotation
    • https://cdn.sqhk.co/tosobulig/jf0nicl/silesipefuxikejumakomi.pdfIn PDF document text
    • http://winoorama.website/ielts_answer_sheet_reading_academicp84xb.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/gabaginimajenejuneglmn2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402960/normal_5ff9f9530fc02.pdfIn PDF document text
    • https://dibarovufi.weebly.com/uploads/1/3/0/7/130776786/mexaxikipajogesugano.pdfIn PDF document text
    • http://gsmall.space/big_ideas_math_red_accelerated_answer_keysok51.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/fYkKgh1/atif_aslam_songs_list_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/gulaxemetila/iofhfje/zawijidoxixitefuboxolizor.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/0hgdZPj/kanto_power_collection_release_date.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pazipinabobon.epizy.com/football_manager_touch_2020_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/bp_job_interview_questions_and_answers.pdfIn PDF document text
    • http://nufejubonuviwo.epizy.com/msbte_answer_paper_app.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8E 4032 bytes
SHA-256: a2179b76d7f009b34006cfed5af3015a7625ad416b48fad251be2619ec1861fb
font_01_sfnt_off0000dced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCED 5040 bytes
SHA-256: 2a60e2c8b546f92a50316ae56e68ee2b9e50170dd7eafdc71d70424eb818c816
font_02_sfnt_off0000ee06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE06 10108 bytes
SHA-256: c451b8c93595a8f15136bce670241b96e8a6ddb9f81144b3b076119881d645f3