Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453decdc84b95ba…

MALICIOUS

PDF

47.2 KB Created: 2020-10-02 02:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 23c2a30d1ee3d93bcda4048c45f8c76a SHA-1: 44494c0f3a5084ef60e46bb053d4b624d5a659fb SHA-256: 4453decdc84b95baf203582b7bb8325fe393da3390c8e47906fe96cb09b1e00b
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=dailymotion+apk+android+2.3 In PDF document text
    • https://site-1038454.mozfiles.com/files/1038454/piterebitepazan.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/72872231974.pdfIn PDF document text
    • https://site-1037169.mozfiles.com/files/1037169/41351282955.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://uploads.strikinglycdn.com/files/6e83ba27-44fd-4af1-b260-f506663331af/dovuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96076f9a-dd07-497c-8f9e-d02385949638/10150861029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d4ba01-e615-495e-bf72-2545fb6673fd/40752504477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94045e4e-e7a8-4414-b476-05d94fa8a4ba/36998421470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf84f76a-28ed-4b0a-9c54-1d8b95e90b07/vuguno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92b0f7de-2ad8-4909-84a9-70654456156c/fuvonelamudewinipobam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6d12462-cab7-4f47-865f-87572f54b4b0/6226217962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b9e6d27-2ad9-462a-9cd2-f2cd8573c59e/75266625781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc0159d-38b3-435f-820b-1f46000515c4/16865178281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5383dcc2-cdeb-4da8-b5a2-23c5af231c4e/wolalopu.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_off00006b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1F 5092 bytes
SHA-256: aef3a961bada270378e77a153987513b68a2290c63eb2934062c913cfe23cd18
font_01_sfnt_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 11456 bytes
SHA-256: bf5f89ab5b6f0b1c9e08a34b1eb34934cfab30e78c0c88a58666f8dcb89a98f5
font_02_sfnt_off0000a185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA185 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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