Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a31bd72ccfbd253…

MALICIOUS

PDF

74.3 KB Created: 2021-01-25 14:09:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b92034d0a01cbc9142d5814bc9fa1127 SHA-1: 770e7fe0b22c81eccb58e5f412cb1289f5cc57d5 SHA-256: 6a31bd72ccfbd25380ad1eeb0415f2475419c73e5bb835726070d14d0c5a4451
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://baarspo.ru/wb?keyword=bitcoin%20ethereum%20ripple PDF link annotation
    • https://cdn.sqhk.co/savimatuv/Xjigfgg/33428321509.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/Xibifia/snake_touched_by_a_curse.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/hYnh5gc/89211409305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488135/normal_5fde310d43ea4.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/iiSo2ii/troll_face_quest_video_games_2_level_16.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/Eggq5sl/halloween_hangman_games_online.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/LXichgJ/mafia_city_of_lost_heaven_cast.pdfIn PDF document text
    • http://vatemuredaxusob.22web.org/coshh_data_sheets_for_petrol.pdfIn PDF document text
    • http://znasila.ru/best_defensive_badges_2k21_slasher4z33s.pdfIn PDF document text
    • https://cdn.sqhk.co/vigamodijek/UjjtZhg/the_game_of_life_vacations_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/jdiNQgf/20532736589.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/gfihHaQ/let_s_hit_it_off_meaning.pdfIn PDF document text
    • http://jesofafisozosa.iblogger.org/86242708747.pdfIn PDF document text
    • https://cdn.sqhk.co/wapogade/rtfjeav/video_call_app_free_download_for_pc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://retudazugo.rf.gd/77099989988.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_off0000e755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE755 4836 bytes
SHA-256: 83474a7c9377e5994aa7d4f15e9608220dbe1a96152d183f8b8bcb8cda8c6591
font_01_sfnt_off0000f79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79A 10876 bytes
SHA-256: 715d8f61a84865fa4645b0bd3edb8c2563ed68baa37a70a88fe13b14803f99a7