Malicious PDF — malware analysis report

Static analysis result for SHA-256 1916f545baf828e3…

MALICIOUS

PDF

74.6 KB Created: 2021-03-20 11:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: a4f7051ec4aa702d9a4f4b868a323ea7 SHA-1: f81c8ea4776f4e718632a5dbf910da61f3abc775 SHA-256: 1916f545baf828e3c3e2d5b461a81f200d6c7cd05af4388c1c3b3eb00b856c39
104 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://zajinet.ru/123?utm_term=lamberghini+song++songspk PDF link annotation
    • https://cdn.sqhk.co/tibatojo/jhnjfGW/rope_hero_frog_ninja_hack_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415524/normal_6004b744b67ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484115/normal_60401d789485d.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/heQATSK/project_management_wikipedia_free_encyclopedia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387814/normal_60513a2851c76.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/jd9A7e6/popular_star_wars_apps.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/c1fd1924-f2f3-446d-a74c-d3dfbaf27d73/what_are_the_1st_2nd_3rd_and_4th_estates.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_dc68854915b8483cb6095f61d6507e8f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mutirexa/amendments_1-_27_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be9c9ed4-26c6-4145-b5f1-44d98d284e5b/how_to_watch_call_me_by_your_name_on_netflix_vpn.pdfIn PDF document text
    • https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_2bc4e2da08214b1c8d43f4a26e4bfb28.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pipaneku/what_is_the_lesson_in_the_gingerbread_man.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/wizumawonoredanutimipa.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_6755964856014dd3b2cd65c0caa3b2f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xapijifas/99050999671.pdfIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_8f0ff54af83844a1bade328cc5641855.pdf?index=trueIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_a5deb8db9efe4ccc858dc1a302858284.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/04806530-d3ec-46a2-8cdf-682057be7c6f/51394479643.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/26540107156.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/madunegubipabalawuja.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_off0000e4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C8 5344 bytes
SHA-256: 577d3c2857521e3591cfad0298dde441b86913e52dc17b1caa629067cfefb12c
font_01_sfnt_off0000f6ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CA 11292 bytes
SHA-256: 0e3731488cbce86100449005ecb96062ba6763a12e91edb526d677b623bb3a7d

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