Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e170cceb2640ba3…

MALICIOUS

PDF

43.3 KB Created: 2020-10-30 11:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-09
MD5: 6aac7b791625b79f96535edc8fda60b3 SHA-1: a2bc59ef6d1a8652511c3f657a0fc6063bd2e9f7 SHA-256: 5e170cceb2640ba3b2d20584390f394722e78646955bb5f2d3702453031fa192
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/123?keyword=tlc+inspection+fee In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f8d9929d31b5.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/biomolecular_crystallography_bernhard_rupp_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389823/normal_5f8dc8c579e14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8753e4f25ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f8c8da976896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f91fa89cfc47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421477/normal_5f996c4277de1.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a46.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a46.bin)
    • https://uploads.strikinglycdn.com/files/f870d24c-2a98-4e24-90d3-c9663ddc8986/winter_2020-21_outlook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e34d50-cb49-4c3e-95f7-e76b9c72dbea/theme_maker_chrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50748e9e-ed74-48dc-8f4d-5196891053c9/esonstyle_bluetooth_headphones_pairing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f27b908-6c31-44ca-8574-94e660046e60/boogie_woogie_reindeer_girl_in_red_dress.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23d45095-a91a-4a2c-a778-0f13fc2a6a9b/black_blizzard_geometry_dash.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f74f424-aeb4-435a-aa56-cca4347dbeaa/47526716424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cba26e20-0c45-47cc-a3c0-76cf5493d36a/jojipajudeka.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_off00006a46.bin)

Related samples 4

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_off00006a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A46 4652 bytes
SHA-256: 00d2f7d560ca5ed42e229a69e8a0ec558497df7a50dac174d802046414a06be6
font_01_sfnt_off00007a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A38 10872 bytes
SHA-256: e101e67bfcfb148ce97ec1ddffd8b0d9fe758808d58fbf2b140b4238ad48e4b1

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