Malicious PDF — malware analysis report

Static analysis result for SHA-256 de88f1a0a20a6979…

MALICIOUS

PDF

85.8 KB Created: 2021-03-07 06:29:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: bb10c24083667229657e2dd97996e0c5 SHA-1: 44581d514958bde0cd146c73b51de11b2e7bd8e8 SHA-256: de88f1a0a20a697914f94bed6696d029fc1972bb74a4ee6cd9d152d402897061
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a heuristic indicating an image lure linking to an SEO redirector, which is a common phishing tactic. The embedded URL, 'https://gimoguvi.ru/strik?utm_term=how+to+install+canon+ink+cartridges', likely leads to a phishing page designed to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gimoguvi.ru/strik?utm_term=how+to+install+canon+ink+cartridges PDF link annotation
    • http://luxasireku.sportsontheweb.net/69240129100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_602534b018b90.pdfIn PDF document text
    • http://jizerigozigalav.getenjoyment.net/how_to_tell_if_your_water_softener_resin_is_bad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379241/normal_6030e4521c1b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370265/normal_60105198a7899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_602780d7742fc.pdfIn PDF document text
    • http://witikotuxigere.scienceontheweb.net/63148112761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_6035670f0fd4d.pdfIn PDF document text
    • http://gukiduwonaxinef.getenjoyment.net/hp_elitebook_8540p_service_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367617/normal_5ff9750526764.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413458/normal_5ff0b5f37a0c8.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/best_mobile_internet_service_provider_in_ahmedabad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wujixus/bevefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cf7ddfc-5695-42d3-b022-d69389dc2ce3/ciclo_de_krebs_acontece_onde.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/13689180056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946a1ab7-6465-41f2-8829-2d0e61ee6a37/what_are_the_coshh_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/beautiful_in_white_easy_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/selurad.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/funabitonuvapubuzogo.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/free_ableton_live_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/kofajex.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/what_is_spotted_lanternfly_permit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B0 5012 bytes
SHA-256: 514f5294b8a51232e85401998900f4e8f17b4204c7711434213c1e465e848618
font_01_sfnt_off000115d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115D3 11044 bytes
SHA-256: 079674bdc0e36b3932d0a351fcd87a9a1feca61d979de56b3549d249cf467d57
font_02_sfnt_off00013bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BB8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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