Malicious PDF — malware analysis report

Static analysis result for SHA-256 20502438afa26ef2…

MALICIOUS

PDF

61.4 KB Created: 2020-11-10 02:20:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: 577bf0dba793eab9de9f83aa6632b2ca SHA-1: 4917089e2542cbe32ce078a669fbd4bf860148e3 SHA-256: 20502438afa26ef27bd09d4f7368282ade0c8a27d2e1822bf393e480c211eb56
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://ggtraff.ru/wb?keyword=suzuki%20piano%20book%205%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5fa6a2e872c7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f88bbd15ea3c.pdfIn PDF document text
    • https://xizidalubatud.weebly.com/uploads/1/3/4/5/134583516/sozasoxuge.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_5f9bbb467d49f.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/bnf_and_ebnf.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/fititiwur_vowevatures_jaxuras_rusamevivegav.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/zivujunovufexejogonefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_5fa58898b4f0f.pdfIn PDF document text
    • https://midepixa.weebly.com/uploads/1/3/4/6/134622545/6d1bde864c.pdfIn PDF document text
    • https://defejeve.weebly.com/uploads/1/3/4/3/134386135/985459.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000b2bf.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000b2bf.bin)
    • https://uploads.strikinglycdn.com/files/405c49e2-5e1c-455d-9e6a-a091ca048f10/managerial_economics_solutions_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75459b4-bb11-4e8c-9b5e-ba17e39c4060/detectorists_season_2_episode_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d63b9a-ca82-4a01-8b7b-a51d1119f8d3/gamuxexosojona.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 extracted file (font_00_sfnt_off0000b2bf.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BF 5212 bytes
SHA-256: 7df08feb29a6a2c3f702397250a1ca4090dba033b435cce8b0f875fd3b10e528
font_01_sfnt_off0000c4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A0 10544 bytes
SHA-256: 0400572a2b6eab5e18328f1e33652139b3281ea35a7f40fea4948d29770d32f9