Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d88d009ba63113d…

MALICIOUS

PDF

40.8 KB Created: 2020-10-07 09:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 663967a139dbab111bc17d5421731ff3 SHA-1: a1543b5e372a2ace67055df462ee79b03dccaae5 SHA-256: 5d88d009ba63113de2fdf784394b09f1b44aa0654e38af23c0905c9c497975dd
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/strik?keyword=omsi+bus+simulator+demo+free+downloa In PDF document text
    • https://site-1040558.mozfiles.com/files/1040558/96337028709.pdfIn PDF document text
    • https://site-1039224.mozfiles.com/files/1039224/39300957102.pdfIn PDF document text
    • https://site-1048485.mozfiles.com/files/1048485/tamibu.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/1/0483/3601/1417/files/70039188357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/dragon_ball_z_costumes_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/bill_burden_elementary_school_rating.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3382/9271/files/tofigilezofatazibebuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0028/5342/files/50798293313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/writing_chemical_formulas_and_naming_compounds_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7358/0437/files/worksheet_precipitation_reactions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/usps_indicia_specifications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/smithtown_gospel_tabernacle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0114f90f-db47-4c7e-9230-e07bbea1476a/87262731831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fe330f9-a178-45ce-a5cf-523882758a5f/kegafolopovozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9678143-59bd-407f-9372-a3f17b88fe73/1240922819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69d6e5f2-6cc1-4cec-a0cc-ac6c0628c1aa/61162006135.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597f3aaa-3e12-40b3-bce3-3f76f1a4926a/88108500038.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_off000060e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E4 5312 bytes
SHA-256: 7b3a352ea1e1ab0f8e5833fc2bba13b68e31009a48bbe6c564eee9adf9de2b5c
font_01_sfnt_off000072e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 10380 bytes
SHA-256: c819c58d8ed2f80840f7e5bc0e01d096a69415e50aa924ef85366f2012a1dd21

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