Malicious PDF — malware analysis report

Static analysis result for SHA-256 72634472410ce83e…

MALICIOUS

PDF

70.9 KB Created: 2020-10-02 03:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-11
MD5: e41a4c4312c0abaa74012d4aa1ff9a9c SHA-1: 509e869b2152f00242da6f41a67bbe587059783d SHA-256: 72634472410ce83ed5a817f8df6b09b63ed45d77f4cd0f2104867b6da373d9f0
150 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://cctraff.ru/strik?keyword=sigma+ksf+3525+manual In PDF document text
    • https://site-1037132.mozfiles.com/files/1037132/69627858420.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/53798504200.pdfIn PDF document text
    • https://site-1038975.mozfiles.com/files/1038975/baduninagavinugipukopa.pdfIn PDF document text
    • https://site-1037073.mozfiles.com/files/1037073/89889016218.pdfIn PDF document text
    • http://files.etagerellc.com/uploads/1/3/0/8/130814761/7949780.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d10f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d10f.bin)
    • https://cdn.shopify.com/s/files/1/0479/3991/1847/files/pokemon_gym_leaders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0791/6707/files/lagenejimopelajax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/shortest_basketball_player_to_dunk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/318c84f4-6e98-4301-a309-9f50c1218e7f/15471640713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/883477ff-7b4c-40f9-a1b3-5021fefc458c/maleforek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41402f8-9d5b-4431-a233-a124380aead3/47281483282.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9accd916-4375-42a4-ba02-20b4a4ff0631/71302964423.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91ac31ea-34bb-4465-b932-55e7e7ced201/80659823248.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 extracted file (font_00_sfnt_off0000d10f.bin)

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10F 5580 bytes
SHA-256: 2b2cf0a9b2bbb1f395e0a134e4cbec1694dffceaf4c9f82e9079ea4316fe3589
font_01_sfnt_off0000e407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE407 13752 bytes
SHA-256: ebcf405a37090aefc2946d5a53c032a7d669407b99dea3a30bfab672bee003f4

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