Malicious PDF — malware analysis report

Static analysis result for SHA-256 445377d80f7f9cf0…

MALICIOUS

PDF

41.3 KB Created: 2020-10-13 18:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: bc556be5ed90a3d08967535cc41d8f12 SHA-1: de3bd6df78d021d44275a9a692c90a89d24bc8a9 SHA-256: 445377d80f7f9cf0a4865950aee61d164571ec5627f4d5614988e42867d7c1f8
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/strik?keyword=what+is+relational+algebra+in+dbms+pdf In PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/81976857612.pdfIn PDF document text
    • https://site-1039631.mozfiles.com/files/1039631/72488762322.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/21296926265.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bewoti.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3125/1102/files/pojapowesasuvadilubeles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1708/3286/files/25394470125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/drawing_angles_worksheet_ks3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/real_estate_purchase_agreement_indiana.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_off0000617e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617E 5608 bytes
SHA-256: 8444ace0560ae7a219b623aa6aaa9961504fd17e02e934e71805781571f01fad
font_01_sfnt_off0000746c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746C 10732 bytes
SHA-256: dd9c06b4de744baf61e3d724071e0eca4f5b12166710aac089a823c468c96090