Malicious PDF — malware analysis report

Static analysis result for SHA-256 0116339938bbca3a…

MALICIOUS

PDF

39.7 KB Created: 2020-10-17 14:38:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-28
MD5: aa3a9966d8b16b9d43437322be57edce SHA-1: 9808d97b9358c6932333028e5e425eea6d70003e SHA-256: 0116339938bbca3abfabc2bd33241e1a7b6f5e5698a6a2b3895caf7596500c44
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/wb?keyword=instrucciones%20del%20turista%20mundial In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f86fb5ea2f0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5f8a024948a5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005df8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005df8.bin)
    • https://cdn.shopify.com/s/files/1/0501/6875/8429/files/tenor_sax_standard_of_excellence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6629/6986/files/fewuzidisutedoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9416/6683/files/96667054302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/ordering_numbers_worksheet_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3730/7292/files/29269789434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9919/8118/files/32533296312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8321/1975/files/12943838764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/4694/1084/files/mee6_bot_commands_not_working.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8560/4032/files/luwavovepofavoken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3634/7032/files/jafitasubelaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5129/4376/files/wufujixanowopus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5696/2467/files/31801041356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d3f9d2-e5e8-434b-94a2-5c64dab3457a/24406018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e710791-fe98-4fc9-b880-bafedb4b04d8/vuxasifekolorataxa.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_off00005df8.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF8 5020 bytes
SHA-256: e054b33937c01acc04d004cef2bda5cc706252eb10d216e5ef9e2a1a96df3b88
font_01_sfnt_off00006ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE4 10340 bytes
SHA-256: 91ccef4b4ebde75efc5ae4863ea654b6b626d658335d5e570e5c272a158c44e1