Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1cefaf0de05459…

MALICIOUS

PDF

72.8 KB Created: 2020-11-29 18:01:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 1a11c1825b78c20088793aeb6d0c691e SHA-1: 7cd9fff2b8192d73077c69324fae2d51e01a6a7e SHA-256: 5a1cefaf0de054594aa698a39b7e0077945bb5aae025ca4c864286eb0ee992e1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/wb?keyword=solar%20panel%20battery%20charger%20calculator%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_5fbb409685c0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_5f8ffc92d3c39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373986/normal_5fa6411ab5272.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/chicken_biryani_recipe_bengali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389376/normal_5f91134a3ab80.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/defying_gravity_wicked_music_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_5f949e0d44a83.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed55343e-8a71-42ba-81b2-30337829cf85/14071351460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f6d399f-5cd7-41c1-b77a-8250a22ad2b2/59263572476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a1efca-7e76-4bff-8a09-a68f7b53b4ee/fegumojejajikukolabero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc4b6eb-9ad5-4d76-ab72-8bcf4daf9d4e/3065341434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30cf382d-a1bd-4a19-aeed-103c72a3dd41/documentum_tutorial_point.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_off0000df39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF39 5584 bytes
SHA-256: d965c44c3c3584ec51c00587f948e82ce3d19187db4a043f5233475452b2c2cd
font_01_sfnt_off0000f231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF231 10576 bytes
SHA-256: e5ab4abc8f688212904099974d46ab1c249efbb1c2946e52bc0f255cd48234ec