Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d3bf3721f44982…

MALICIOUS

PDF

72.0 KB Created: 2021-02-11 19:39:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ae5ca095ff11bb06e0d3fa38059572ce SHA-1: 660dc6ed14db82b903f017580f875ac009b23f73 SHA-256: f7d3bf3721f449829bc87e493807854419b24c857f91289ee1e0f866f88604f1
136 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
  • 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://seumenha.ru/wix?keyword=clear+answer+jobs PDF link annotation
    • https://cdn.sqhk.co/dofexoxev/ighfjfO/54002822571.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454052/normal_601c647ad9b61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5fdee0e44ebef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416150/normal_5fef3e3e1d8a4.pdfIn PDF document text
    • http://kittyplay.online/shop_rental_agreement_format_in_tamillnbuy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_601aa3007cc35.pdfIn PDF document text
    • http://helplnstagram-confirm.com/i_love_you_piano_sheete2t3v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406789/normal_5fdf8f502a373.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/WnKjf8y/91402666396.pdfIn PDF document text
    • https://cdn.sqhk.co/nobegasosev/FgdIjbU/minecraft_disney_world_seed_xbox_one.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/lovetijif/bejowotu.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/euchre_score_sheets_for_16_players.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/texas_chainsaw_massacre_1974_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/fantasy_football_draft_spreadsheet_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/jifupufibu.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/employment_registration_card.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/8542831085.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_off0000deec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEC 4892 bytes
SHA-256: 45eeff69f7126a4aa2cd10deb515a3926b0506c57a751a8547bcf5cc851206e5
font_01_sfnt_off0000efaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAA 10488 bytes
SHA-256: 61adfd585fd8ae68ef678c2c194a8f5d0d67ce0d66a18bf7dc993216b377981d