Malicious PDF — malware analysis report

Static analysis result for SHA-256 19104bde0d60de13…

MALICIOUS

PDF

42.6 KB Created: 2020-10-11 04:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: eb1b256f99f8a7d555987aea534e0447 SHA-1: 426c03058a34d2c1450d58d93efde0ca7336237e SHA-256: 19104bde0d60de1372dbb12d4c396c481139f8d6fb65a0b6b63350cf434dee03
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=intel+6+series+c200+series+chipset+f In PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/51796006114.pdfIn PDF document text
    • https://site-1039000.mozfiles.com/files/1039000/55555454156.pdfIn PDF document text
    • https://site-1042185.mozfiles.com/files/1042185/62659744102.pdfIn PDF document text
    • https://site-1040346.mozfiles.com/files/1040346/nizufogevopibumebazafikul.pdfIn PDF document text
    • https://site-1037180.mozfiles.com/files/1037180/62848805222.pdfIn PDF document text
    • https://site-1038606.mozfiles.com/files/1038606/zizufuzumen.pdfIn PDF document text
    • https://site-1038756.mozfiles.com/files/1038756/nizifugo.pdfIn PDF document text
    • https://site-1036969.mozfiles.com/files/1036969/podagibekosimirefosage.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/1/0483/0373/4947/files/desub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7981/8661/files/22114152725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/how_many_pages_is_4_000_words_double_spaced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9150/2269/files/rudevijafine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def5c7b8-4b65-4eb8-9d2c-45dcfb92f8be/99344371585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29e5ddb-c0f2-405f-bd5f-389288515497/nanaxuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca08994-5d88-4c2e-b653-00114abf3890/wajudi.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_off00005cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF9 5260 bytes
SHA-256: b2e97dd3acbef424c4da387c2049e695f8bd79a745470cff15968effc17ec66c
font_01_sfnt_off00006ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED4 14384 bytes
SHA-256: dd6759ac215faecd9436a9d3dffb2b88ec5ae57767aff914c2493c5f9dad3184

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