Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd772b41a94e8c85…

MALICIOUS

PDF

73.3 KB Created: 2021-01-07 23:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 3864790061238d8de313c5987fdffc0c SHA-1: 808dc925d294b10bc70701288b8059b94385be9f SHA-256: cd772b41a94e8c85fa3b96cdd51a36e4ae5287f2fd4cd15f6a2cde2d79ffb6b8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://traffking.ru/123?utm_term=yahoo+answers+pregnancy In PDF document text
    • https://poxaneduwi.weebly.com/uploads/1/3/4/2/134234601/wojubu.pdfIn PDF document text
    • https://vefutafefu.weebly.com/uploads/1/3/4/8/134882527/vitikudat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368742/normal_5f8b2f130829e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388619/normal_5fdbce179a356.pdfIn PDF document text
    • https://pobafegesodagiz.weebly.com/uploads/1/3/4/3/134305133/d04c55d0d861f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425506/normal_5fd82d9aee0b6.pdfIn PDF document text
    • https://sefusozikoju.weebly.com/uploads/1/3/4/3/134366316/6148464.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/N4gfoie/how_to_play_chronicles_of_crime_noir.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://uploads.strikinglycdn.com/files/4bc794a7-338c-4b89-b8bf-eb80459e7e4d/correctional_officer_resume_description.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28addf3d-3ece-48c8-87e2-607dcfbedd2e/19908625573.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_off0000d6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A3 4976 bytes
SHA-256: b3de991ccbf63734920acacac73cbfae1f9b0afa7bf0d2db9bbfbaf9d77a4ec6
font_01_sfnt_off0000e78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78D 10292 bytes
SHA-256: b4dbcab980352d014f2823465e55570ed8389f9abefb9f327eb48458e0d2f460
font_02_sfnt_off00010ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC2 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71