Malicious PDF — malware analysis report

Static analysis result for SHA-256 25032f1957bc3171…

MALICIOUS

PDF

40.3 KB Created: 2020-10-31 13:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-08
MD5: 5acafcb9d7b897ec18d03044d9953d6d SHA-1: 66d2415a385160da6326c803d5ff8318da75cb80 SHA-256: 25032f1957bc31713acd6082306f96be3ec8df80393241ce6768061317b95445
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://ggtraff.ru/wb?keyword=combine%20pdf%20files%20for%20free%20windows In PDF document text
    • https://miwilokak.weebly.com/uploads/1/3/4/3/134375457/50509.pdfIn PDF document text
    • https://vuxarujetununo.weebly.com/uploads/1/3/4/4/134437765/9291768.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/4459597.pdfIn PDF document text
    • https://junovolosexev.weebly.com/uploads/1/3/4/4/134467690/dagupufevime.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/sibobajozoped.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/pekesadumukubiberu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8815/9942/files/28156459692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2703/5809/files/love_bedtime_stories_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3702/2115/files/tx3_mini_smart_box_android_7.1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7013/4683/files/jebolisaxelun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18fc07f0-7757-430f-91ad-3fcdb17eb232/86400415257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5552/9640/files/toburasupawozanibuzisu.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_off00005fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB3 5116 bytes
SHA-256: 1e3ac1259d2796a31ef9eb5c3b266e2b053729ba2399358539db4c9442f8458c
font_01_sfnt_off0000710f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 10492 bytes
SHA-256: 5602d0c4748330abdd209086d2a8e72b88ac5130d26138790350a51edccef140

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