Malicious PDF — malware analysis report

Static analysis result for SHA-256 2168b8f041cc5319…

MALICIOUS

PDF

71.2 KB Created: 2021-03-01 11:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 077fd677ddd80d31bfe25a19c1f2190c SHA-1: 2ba926f1b0ca3dfcba759a8286cd1d32a07d0e6f SHA-256: 2168b8f041cc53197194ea71f5ef05977db22957b0194c77fb0f9ae5279cb995
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jumiwimov.ru/award?keyword=what+is+the+greek+name+for+warrior PDF link annotation
    • https://cdn.sqhk.co/xamitarerivu/iOiQhWB/kejogajukitadur.pdfIn PDF document text
    • https://vesanalu.weebly.com/uploads/1/3/1/4/131482823/wuzofokizu_sedab_nanakusogep_jedifigi.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/13345928481.pdfIn PDF document text
    • https://rajilogibakew.weebly.com/uploads/1/3/5/3/135326989/vupelazija.pdfIn PDF document text
    • https://cdn.sqhk.co/sakupiraf/1gjYd3P/miwokemesunudamawatakam.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/gj7U3WD/juventus_vs_barcelona_2015_formaciones.pdfIn PDF document text
    • https://cdn.sqhk.co/leredupodeka/d3iec5w/fleet_battle_pvp.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/fhbheVz/siritu.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/hddjj6x/men_s_table_tennis_scores_today.pdfIn PDF document text
    • https://cdn.sqhk.co/nivatasob/piegiWE/9396300244.pdfIn PDF document text
    • http://vomimaforotagi.mywebcommunity.org/povenexisuzu.pdfIn PDF document text
    • https://cdn.sqhk.co/tikugosedik/Fiaw7d5/tank_strike_3d_war_machines_mod_apk.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/diragotasunononanenuk.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/84339106105.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/cls2ji1/fenuwuzunab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC07 5316 bytes
SHA-256: 9a1c88d6c83382c02466adaa9db1e4ecabe4710e6e919d33b22506004ecf21ce
font_01_sfnt_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 9968 bytes
SHA-256: ff13743afa401fa07e303bd7245cfe3f87dc0b2f45daf64490b6b6fe654aa26e