Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8f0de18edb4369…

MALICIOUS

PDF

40.4 KB Created: 2020-10-10 10:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 52805a44594c200b71510c32948f765d SHA-1: e15af684d1e75842159c7fd011e5112e1204a755 SHA-256: 5d8f0de18edb436938f0bf5bf22f887e53e6fd189f0a7d592b1be6a86cb09ece
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=reformation+study+bible+rc+sproul+pdf In PDF document text
    • https://site-1041388.mozfiles.com/files/1041388/62324169697.pdfIn PDF document text
    • https://site-1043043.mozfiles.com/files/1043043/72868812743.pdfIn PDF document text
    • https://site-1036742.mozfiles.com/files/1036742/50367691161.pdfIn PDF document text
    • https://site-1044145.mozfiles.com/files/1044145/masorexijisitepizujifis.pdfIn PDF document text
    • https://site-1041609.mozfiles.com/files/1041609/dunewapugalibulatatem.pdfIn PDF document text
    • https://site-1043653.mozfiles.com/files/1043653/wowivogawogikuwobaguw.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/1/0433/4478/9669/files/tudopuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3421/3538/files/digaletegodegelewuzag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/xawepabuzoxibevefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5745/8593/files/rivetodile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/30106053573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/club_penguin_pin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/rugunasosivone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9036/9959/files/moffett_field_golf_course_weather.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_off00005d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8D 5548 bytes
SHA-256: c332b728a09910627098cda335ce63e38de482255cd2efc3af03c9d66ecedeb4
font_01_sfnt_off0000705a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705A 10528 bytes
SHA-256: a73c93b5d953264e86314ec22d01526d48a707dca292bc603706f2b109790250