Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7f98adfc96f75d…

MALICIOUS

PDF

50.6 KB Created: 2020-10-26 17:08:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: dc70257a8d95e042d39004ba4637a7a5 SHA-1: 92736a23a1ef960ac54fbf09ecc10625514d40a3 SHA-256: cd7f98adfc96f75de26fce16a1e4bb250fed0a29a927c1c3eeb427132378f34d
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://ttraff.com/123?keyword=arduino+ide+book+pdf In PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/35f2ab37.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rugatu-rugot.pdfIn PDF document text
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/7507433.pdfIn 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://s3.amazonaws.com/zetare/wonizilogajelezonowixuk.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/73332123919.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/les_aliments_riches_en_fer.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/51929662918.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/67057875574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc799a68-5022-4608-a466-e177030e6ac8/xiwagikax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abf648c9-854c-4073-b113-ad2afb5f8114/the_enzyme_factor_ebook_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec1cc9f-dc2c-4d54-b262-f69701ec5586/bizaxopezizududalame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7857457f-f365-49ad-a930-c56d4d44675e/38197359913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b3ff8aa-9aac-48e8-9899-a9cfb69f3d5e/87075346279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35ca460-2a1f-42ac-a0fa-2c751fb73709/padegikipagifok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1ce6e35-78a8-46b2-afd1-da282dd537fc/komomawosuxed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25763c76-5480-4138-ac66-4ddae1101d8a/dfo_tier_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda4526a-e77d-4154-b6c8-9c4267ec96dd/sims_freeplay_mod_apk_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cceb0639-d7d9-41f6-aff1-76337dad74fe/vray_rhino_5_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/rakidabefe.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/green_revolution_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/26916982747.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/tonejolezifuwalob.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/hsc_blank_answer_sheet.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_off00007c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7F 4612 bytes
SHA-256: 92d324a9b17896d249725f95977319002add08de082cafb063fb3933fa4b7ce0
font_01_sfnt_off00008c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C23 10548 bytes
SHA-256: c5f9d3b23bcccf26ca953933f33d77436757d0a9d45193db5492f7b11884202c
font_02_sfnt_off0000af4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF4B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2