Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e7923a88331747…

MALICIOUS

PDF

40.1 KB Created: 2020-10-06 23:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 7bfb82a9a7af82e133725732727aa2e4 SHA-1: 192f7372ec8ae8dcfc224bf5ed436a2e37b4661e SHA-256: d3e7923a88331747250c67fc96a2a997be4ff38f4b6ecd2298fc2434aedfbacc
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=tncsc+assistant+engineer+syllabus+2020+pdf In PDF document text
    • http://vikotifin.amyruthallen.com/uploads/1/3/1/3/131379550/bugulivawixe.pdfIn PDF document text
    • http://padudo.etceterabooks.com/uploads/1/3/1/8/131857782/radigujuxomulad.pdfIn PDF document text
    • http://mibasar.ppshowjumping.com/uploads/1/3/0/9/130969858/5720625.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/1/0482/0723/3181/files/dd_5e_magic_missile_cantrip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/jiwafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/sariwowuxonagasozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/oz_park_chicago_statues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/pythagorean_theorem_real_life_problems_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6843fa05-6f55-4ee2-9cd6-9ce1b40b92c8/xaxoperuzunudig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8706a83c-66fe-4327-80bf-b60716b5d307/50996871619.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76dce8b1-6f73-4071-9c56-ae7e8f83fe7c/42585621893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed46162-3186-4c36-8bfb-c5ab4221ffc5/68131750503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52bcffae-3485-4180-a6af-231f08d72025/fetoxonibiwadopu.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_off00005ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDF 5788 bytes
SHA-256: 020eb526af3f95a40808313c65ed41febf5e36588904a955f8385105d3eae551
font_01_sfnt_off000071ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AB 10016 bytes
SHA-256: 21d79c924cc4e388fda0100349b7e6903a57ad5431bd012b6b32ea38f7d97271

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