Malicious PDF — malware analysis report

Static analysis result for SHA-256 73cd53901df071e9…

MALICIOUS

PDF

71.2 KB Created: 2021-04-02 12:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f2ad7e2170953cf79f32e6ffc7e3c18 SHA-1: db6d2645e8bf4841defa3fc3a56c81d752d8cfd2 SHA-256: 73cd53901df071e9109a66b87acec74881e1710b456bb6692aa1d64eff0e500a
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains heuristics indicating it's a lure for SEO-based redirection, specifically pointing to a URL that appears to be a phishing or malware distribution site. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 4

  • 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://druttle.ru/wix?keyword=cursed+gifs+imgur PDF link annotation
    • https://cdn.sqhk.co/giganopof/gifDhgg/rearranging_equations_worksheet_year_7.pdfIn PDF document text
    • https://pezujereg.weebly.com/uploads/1/3/5/3/135349759/damixevaroni_gisum_vubikonebi_gudasisiz.pdfIn PDF document text
    • https://cdn.sqhk.co/miropefaneka/Ujea5wX/barbie_makeup_games_for_computer.pdfIn PDF document text
    • http://useraisins.pro/ability_centre_annual_report_2018djwfa.pdfIn PDF document text
    • http://evgeniy-semenenko.ru/toshiba_regza_tv_remotewwijv.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/ieBhdjh/wufipiwoberorimoxidazoge.pdfIn PDF document text
    • http://copyrighytsupport.com/packers_uniform_schedule_2018szysf.pdfIn PDF document text
    • https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/ditupuj.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/8qIgijb/6810975205.pdfIn PDF document text
    • http://emmetrix.net/15142677281gv1at.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_603c1eb3b19c3.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/dvjfIlU/sirumivukutazuwelojozopi.pdfIn PDF document text
    • https://ligibodi.weebly.com/uploads/1/3/4/4/134469997/dawenezatatujoduz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452609/normal_5fe238e968df7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495974/normal_5fdebb9db96a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_600a19eded352.pdfIn PDF document text
    • https://zigajimimokok.weebly.com/uploads/1/3/1/3/131383588/9585671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_60465e045a2c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394077/normal_60156b715f908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485321/normal_6023c88f48eb1.pdfIn PDF document text
    • https://dimavuvinidet.weebly.com/uploads/1/3/1/3/131397938/padofonepenip-fubogebiv.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/sitok/riwusinibufamovisiva.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/cara_gta_v_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/research_design_in_clinical_psychology_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/how_to_make_an_egyptian_pyramid_with_cardboard.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/riddles_in_english_with_answers_for_adults.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_off0000dddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDC 4888 bytes
SHA-256: 8d0c9820cd33d84edfaec2f4f23d9871e873059cc3016c9098925513d867dbbc
font_01_sfnt_off0000ee67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE67 9668 bytes
SHA-256: 4095faa725856631288e6fdf35d56ce08336f51e34775fa375b23d49a35d4c16