Malicious PDF — malware analysis report

Static analysis result for SHA-256 425cdb4207e6c255…

MALICIOUS

PDF

67.5 KB Created: 2021-01-05 05:20:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 5c2fb25252d61aee387758821cc2911c SHA-1: 76618d2c999bb7642b621d6f9ef11810cd4aba2b SHA-256: 425cdb4207e6c2551e793d9ca0bcc66f0a331bf7322032358bd99086f499b374
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffking.ru/wb?keyword=door%20between%20life%20and%20death%20movie%20download In PDF document text
    • https://tejovobomogopiz.weebly.com/uploads/1/3/4/6/134626725/4683201.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/xefobizekukiv_nukali_torovefemoxuno_guwafusu.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/vefofonoz_dixonopofaxifiz_wefajapobo.pdfIn PDF document text
    • https://vopipogumibuwel.weebly.com/uploads/1/3/1/4/131453394/6863363.pdfIn PDF document text
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/1780019.pdfIn PDF document text
    • https://timelasabo.weebly.com/uploads/1/3/4/3/134345700/3244856.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/51830092204.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/latest_south_indian_movies_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/android_gmail_app_modern_authentication.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/english_b1_level_test_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec31c535-c7ba-4e46-843b-0f8ef6ca3f50/bumananekexovevid.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_off0000cd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD6B 5260 bytes
SHA-256: 1a4542c24a9e14580b0ec39acce9ddaa0cb27a0de61b7c8d859cb1a4acaab491
font_01_sfnt_off0000df3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3B 10200 bytes
SHA-256: 42a65b01d137ffd8729d645e86dcc3003382dd8c9511336202652b17f1359163

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