Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cf506f6450b6e0f…

MALICIOUS

PDF

70.8 KB Created: 2021-03-01 18:53:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f3b57e731765ff8f210e24b45b7d62de SHA-1: ba7c97962913dca9084446b0e8be0eaf59bdc402 SHA-256: 6cf506f6450b6e0f6c90111d9609407f8bfdd4bcfac42e1c95b3a030bfe2fc64
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://resalured.ru/wix?keyword=modern+real+estate+practice+19th+edition+pdf+free PDF link annotation
    • https://cdn.sqhk.co/gabixeme/iciaiiu/dania_sandwich_tapas.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/2WPjaie/legend_vs_zombies_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385216/normal_5fd06ef354b14.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/jiij0MN/33596586637.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/6ibjaih/gopigo.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/hiKijjb/birdies_donuts_norco_ca.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/hbgeigE/my_ice_cream_world_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_600c8f9b96ca1.pdfIn PDF document text
    • https://cdn.sqhk.co/vebapejun/zjaMjiK/nisisurejupolupirel.pdfIn PDF document text
    • https://cdn.sqhk.co/murofoli/2HgdNcq/best_pc_games_2020_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/biahfhh/mozivenexexe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dapizodipe.myartsonline.com/price_volume_mix_analysis_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/idiopathic_pulmonary_fibrosis_guidelines_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/kpa_noviform_gonsalva.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/amnagement_intrieur_maison_moderne.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/american_standard_freedom_95_blinking_red_light.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_off0000cd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD31 5456 bytes
SHA-256: 8a6b4effb1fbcee68e6ed8c8d38060fb0559c329f9bbffaacbb298bb23a8874c
font_01_sfnt_off0000dfcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCB 14796 bytes
SHA-256: e9a7c495f489fb8dbc2d1b827600b63d14756f0ec839e9edc26c34a417d4c42c