Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b77c049bb6c343…

MALICIOUS

PDF

44.8 KB Created: 2020-10-26 19:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 4b131d6d49b91d1c7830624aaa1b054b SHA-1: 5f949ef796c1f4d3d095e4787e74a5c0536be9d4 SHA-256: 72b77c049bb6c34334a958216bb30b5dd738d46f10c5c5102d0b7a9120a643a6
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://gettraff.ru/wb?keyword=yamaha%20psr%20220%20manual%20pdf In 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/0aef7902-6034-448f-a72e-6b892e790c14/81867024038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abfdacf6-e4db-445a-8ce7-42bac984cd05/kumiwawinafufir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7daac8-46b9-490b-9972-726b5b337456/whitfield_pellet_stove_service_manua.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d93edce4-748e-460d-91da-13f1d9b058a3/irony_worksheet_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ce8958-edd3-44f3-a9c1-2fef9c943d0f/pexim.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/62015377320.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/vukatuwukunataliguledef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/009a0235-6955-4243-8f36-979dd515fa3b/fonegugukegoruboluwaride.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7cae143-d00a-486c-91a0-7f5f7f3a0fee/blues_clues_musical_show.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/529a6109-33c3-49ae-ac22-10d0dd9b861c/zefeduruxepivotajemevet.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/christmas_song_sheet_music_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/60835622977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/894ed5ca-0fe3-4872-8bf1-591f5e83d2ba/43768692466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b349f5a-972a-47d1-9048-84fbbd9e8ce7/paracord_lanyards_as_instrues_que.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8e60bb9-a07e-4255-a293-8898f9d02377/84559306099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfc414f-6ef0-4817-ba62-6128a8add0b3/72455541232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d62e1c62-a73c-489a-a8fd-e09fad7120d6/fuferipalerokiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc7f50e2-19de-4ac4-99c3-92d7284bc4d7/winunifoxoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe0fe4c4-08e8-47c2-8b14-2bf141926573/xowusiwafolafegisexawexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e113b0f-7ada-4c1d-8bc5-c87440f5275b/20707363646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbce627-9c20-4940-a12c-c88582ddd4af/grange_display_stardew_valley.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_off0000605c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605C 5044 bytes
SHA-256: ace65544105c14b8ceb242a26b1e39a39c3955ebf10bea2e7b353f8b45905a9c
font_01_sfnt_off00007139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7139 11220 bytes
SHA-256: e53e2178a061f98e013318234c092e0f256ac4b24adb00486cfe845382ff3235
font_02_sfnt_off00009641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9641 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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