Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8f9a15b3fee6bd…

MALICIOUS

PDF

33.2 KB Created: 2020-10-04 18:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 1bf840839e83ab81e535bc4800f6a097 SHA-1: 406cd66ed03a7b5d8a527f5152b5959786a9edb1 SHA-256: 5d8f9a15b3fee6bde08cecfed4b6110a2db8c76830ff51d3f031923f5405e896
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=business+communication+peter+cardon In 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/1/0482/7047/5419/files/borderlands_2_maya_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3470/0694/files/mejafowigawiwedeluratamin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1721/3851/files/56910196791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/8044/5852/files/xiterixede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/st._labre_indian_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9004/3814/files/graphic_storytelling_and_visual_narrative_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1176/4135/files/worezuxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/futadigifob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd33537-2802-4a97-80c8-b1aa34e37b57/87359724810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b71940-73fb-4ea5-9ee1-cad037ca1f8e/5830404074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9247/0685/files/disney_moana_full_movie_in_tamil_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4587/7922/files/vigefupipubopaloxev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/gemusuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/88548701196.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_off00004620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4620 5236 bytes
SHA-256: 1bc5bdfd37345664ec5e569a71df5e33ac864b9b55d2a9383af79fe5fe98ba93
font_01_sfnt_off000057d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D5 9464 bytes
SHA-256: 785bd1f6bbb83d94d80e4f1a46e5d9efdc3660f40a074e8ad8af76f8e0426132

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