Malicious PDF — malware analysis report

Static analysis result for SHA-256 478066ba94b65e6a…

MALICIOUS

PDF

52.4 KB Created: 2020-11-05 00:05:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 370e595a16af9d78259853cf0729de85 SHA-1: 44d86b0e005a8545a7f94a5e3c500d3ed30bb087 SHA-256: 478066ba94b65e6a3fda60c846733e27182e9283bc176adb496906515a8249f2
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://cctraff.ru/strik?keyword=apk+game+store+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5f934f65bc980.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f8b80a6b3a6a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wonoti/sociology_and_modern_systems_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/jalom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/654b5530-b4fe-44fe-9e97-b6096a5f5240/68334352741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22dd2fb8-1c99-4bc9-b32c-90fc6faa939e/juvikuzasiwosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff63af7-c5a2-487b-8305-7b2079f79811/32171250661.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/visifekamoxegazawepisadax.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/13_days_in_hell_unblocked_games_google_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/49874892249.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/xugapekesufibevite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d67c4fd-2760-46c2-820b-5cc81b1abc52/tusiwudenabagazemubop.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/xoxuzutefevoba.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/40749157312.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/15035914495.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000823c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823C 5164 bytes
SHA-256: e93000408510abf01e2027c7dc8414e3df0e1bc7f744f872d63f59022250f9f0
font_01_sfnt_off000093c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93C3 10212 bytes
SHA-256: 5c28f6bec79c9ca02707b9623b7e654b2b0917d938108338363946fc0b782336
font_02_sfnt_off0000b6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6BA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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