Malicious PDF — malware analysis report

Static analysis result for SHA-256 22cc496fd0428c21…

MALICIOUS

PDF

70.4 KB Created: 2021-02-24 07:29:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2dfc750778a030d125aa5cbf205af915 SHA-1: fa00701ad3080d55a47cc3506783e499ee77b566 SHA-256: 22cc496fd0428c21f51ab2597a8c713a2daf1720c4b9e2edd73cb45cd8a9b54c
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=showbox+apk+new+version In PDF document text
    • https://cdn.sqhk.co/zovifesojeme/d6iatxJ/vozeremilugebod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379959/normal_5fe8629e69a36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fd0d3e43991f.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/KdiehhX/18879143624.pdfIn PDF document text
    • http://ig-about.net/23841918146d9fk1.pdfIn PDF document text
    • https://cdn.sqhk.co/posiraki/iiaihjc/tower_defense_simulator_codes_august_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/eg7r6je/zumuwijulekoli.pdfIn PDF document text
    • http://kind-insta.site/67638218288qbk2b.pdfIn PDF document text
    • https://cdn.sqhk.co/kufagilan/jjtjgrv/shrek_2001_english_voice_over_wikia.pdfIn PDF document text
    • https://cdn.sqhk.co/fowurona/kid1geQ/zgirls_3_furies_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vipikunowi/gcjdif7/lagemavorufekupakije.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/pgeuhg9/carrom_board_wholesale_dealers_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454803/normal_6011f1ee138cd.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/jhig6ge/home_design_makeover_app_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/Jt4Rzja/hungry_shark_world_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/kjcibEm/classic_aviation_helicopters.pdfIn PDF document text
    • https://cdn.sqhk.co/kosojilufut/bJGMoif/41308860134.pdfIn PDF document text
    • https://cdn.sqhk.co/bodujemep/gjggcid/angie_s_list_reviews_for_roofers.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_off0000d795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD795 5404 bytes
SHA-256: 30ae3ac0ef3f76cdef20a228c11b4c1aefbd9148adf1c34d4a39f1e0e8c5a875
font_01_sfnt_off0000ea03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA03 10028 bytes
SHA-256: 6dc4da07c50a0e59bb194c72ebfa4fb8c067e7c0fc33502066091793c0948636

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