Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bf4a0bdd6afe07…

MALICIOUS

PDF

35.6 KB Created: 2020-10-27 10:58:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: c1df8b843a31da50928f76d2aec85d51 SHA-1: 06cefb2f8f9c99628fb317d3c6ea671cc81ed07f SHA-256: a8bf4a0bdd6afe072bfcab8bc57e9ba9499338de190175c5d5e19d5bbd154d29
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=mens+ralph+lauren+passion+pink+sweatshirt In PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/pogexebevorowujiru.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/nhs_lower_back_pain_exercises.pdfIn PDF document text
    • https://bizowubojixix.weebly.com/uploads/1/3/4/2/134265373/8738193.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/lozazokoxusa.pdfIn PDF document text
    • https://jawogebewo.weebly.com/uploads/1/3/4/3/134369376/986fce1ad89ef4.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/pazewidadazixawani.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/medical_terminology_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/zisenogoxuw.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/safutozemimejituzidofara.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000049ed.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000049ed.bin)
    • https://cdn.shopify.com/s/files/1/0494/2220/5095/files/41628994169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95411ea-e32c-4476-94fb-13d98f822e15/optima_xm_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcb85127-78b6-40ca-a362-969821c4c64d/motorola_xoom_4g_lte.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d9d97a6-4507-40ca-9001-7c1a365510d9/xosolipekabelev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdce1a62-5f79-4336-ac34-76818d95a18f/wavinovumekubawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440f8eb6-9009-4aed-a11f-410176da4522/zejijafagebufidobawepege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5946/8701/files/89797622025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2263/1067/files/96044422711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8385/2704/files/pecan_prices_las_cruces_nm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7038/9924/files/fenoxalum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4062/2760/files/gatavesofugudavozovibuma.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_off000049ed.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49ED 5068 bytes
SHA-256: 329e61f2af8b9a601cd3cf72b7a26d3deb3525a3d80ee80d6943b3d3611f4233
font_01_sfnt_off00005b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B37 12064 bytes
SHA-256: 80445fd8bb9356502520b053bba22bf54e25a69178d4a13e2fff8471d5d63b66

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