Malicious PDF — malware analysis report

Static analysis result for SHA-256 d075f9b0df802cb9…

MALICIOUS

PDF

40.8 KB Created: 2020-11-02 06:27:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-07
MD5: c9af40e7322cd26a21cf78a565fb7dbc SHA-1: c9d02c843994799ce264480d0a261b85540570c1 SHA-256: d075f9b0df802cb99f0a52796f1d1fa4fa1d66beebd77d4533da8cfbb6d74cf9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://gettraff.ru/wb?keyword=bingo%20information%20sheet%20word In PDF document text
    • https://s3.amazonaws.com/dugibabafod/air_raid_offense_playbook.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/56525555105.pdfIn PDF document text
    • https://zuxubemusaf.weebly.com/uploads/1/3/1/4/131453996/7548099.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/timidibusali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f8c81a05a0a8.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/51542797545.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/christmas_brain_teasers_worksheets.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410432/normal_5f9f04469f140.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/blood_and_guts_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/bilukidakepal.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/kenmore_electric_dryer_repair_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005f7b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005f7b.bin)
    • https://cdn.shopify.com/s/files/1/0505/5374/9701/files/windows_mobile_to_android_transfer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4212/8031/files/83911808283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7214/2497/files/free_printable_division_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5726/1977/files/cake_baking_classes_louisville_ky.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 extracted file (font_00_sfnt_off00005f7b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7B 5428 bytes
SHA-256: 6c75596fe2bf4ae1ea2bc947ee34b1446c0b82d279e6c0d504ea1df810340d61
font_01_sfnt_off000071df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DF 10772 bytes
SHA-256: 8ec24d631b61ddd9de58e7f74c11c64549e2647006624c6190fe40f9cc6e2f5b