Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2512004a750fd4…

MALICIOUS

PDF

34.9 KB Created: 2020-10-01 19:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 6c9b0f9c63c248027acdf56b22fd5806 SHA-1: 3157c58ece057845ef6697a0ea5a3299af3b7de4 SHA-256: af2512004a750fd4dd22560f74510292f5d12c41e3a97efaf6675a96fd0c5250
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/strik?keyword=500+frases+en+ingl%25C3%25A9s+realmente+%25C3%25BAtiles+pdf In PDF document text
    • https://site-1037858.mozfiles.com/files/1037858/3997252361.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/1/0433/1651/0873/files/6680149959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6645/2896/files/the_death_cure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/the_scarlet_letter_chapter_5_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/little_caesar_franchise_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b62e9c28-44c0-48b7-8f02-a68d34f36552/ridalabipezezesedig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba95ba26-890a-44c4-b7f5-d638559d578c/ludujekemigas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8070bc-cbb8-4ece-a124-ba7ec1bb6e49/kunosibevaxodagij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19cb5707-28e9-4ce4-95b3-d9674f61b6ce/verumev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79efb135-4749-4864-8e89-dad22cc93a20/wuvakapajukuvalakemevej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbc6e40e-1036-42d6-8a2c-125eb988270b/gagatobosisivexawolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e504f287-f746-40dc-9baa-220b2079784b/81753695129.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_off00004736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4736 5792 bytes
SHA-256: 075af216711b92c3628ca59ec9f150348d0106f217f091bee4d3f35a5d0aa56e
font_01_sfnt_off00005a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A54 10488 bytes
SHA-256: 23f1d4923bb6ed4b0b8e40bf1d319313799765666fe4ea54e4c60550f949064e

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