Malicious PDF — malware analysis report

Static analysis result for SHA-256 4256752a4a0d8da1…

MALICIOUS

PDF

65.4 KB Created: 2020-12-22 22:06:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 67679ad649cfee9320bd90b3c6698e7d SHA-1: 2aa9c1f5837a505a2977e71d807258031c2c3bb0 SHA-256: 4256752a4a0d8da14aa2a47353cc76333b3f87b826dc88c30f8ef52ff50e34b8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=mind+eraser+shot+purple In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5fb80c8f44e71.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/87b69d16-d6a7-4dbd-8822-a259928abcd6/25353163236.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/19510478613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4482b3-f905-414c-bb21-6648688f0fbc/viniplus_ultra_sherwin_williams_cali.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc115278ef7301f8b11bee7/t/5fcdc68dd336b863f0e29d20/1607321230601/us_atlantic_fleet_commander_in_chief.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/zujejajidexinona.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/52799395989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e51a086-a98b-4c9d-bf94-ae218ed529e9/whizzinator_for_females.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d07da97-cb61-4ec3-b3c4-014bd13d3a0e/comic_book_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e1cf76-4653-45af-9785-bec61b5f81d9/loggerhead_sea_turtle_appearance.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/29706203542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd93d411-6fa7-4c5f-ac1f-dfe4575d23a2/watch_the_amazing_spider_man_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5bb54d-bf0f-4d8c-84d1-4c209fda4eca/80899469555.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/create_list_of_worksheets_in_excel.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_off0000c2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E1 5052 bytes
SHA-256: c243f28a8e2013e6f910fac6bbb54df54ae53f57e6d28129ea0033233faf9825
font_01_sfnt_off0000d413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD413 10940 bytes
SHA-256: 2efc663439ba280ab349091eae756d0819f9ca98a3d1517028f74c52e0aa676a

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