Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc98554264c2d86e…

MALICIOUS

PDF

39.4 KB Created: 2020-08-27 14:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96567943804986d12629ad2e3b2e2247 SHA-1: 32a7991ebbbe22d640dc83cac3dace61c4fda2c8 SHA-256: bc98554264c2d86e0840940fc3b6f0b7a63b02074071f457db99a112369180b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though partially corrupted, contains text related to 'Tipos de diseño industrial' and includes the primary malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of links to known malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a pattern of mass external PDF link creation, suggesting a tactic to distribute malicious links.

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://ttraff.cc/pify?keyword=tipos+de+dise%25C3%25B1o+industrial In PDF document text
    • http://zexipuz.jencolby.com/uploads/1/3/2/6/132695384/8191049.pdfIn PDF document text
    • http://files.krismcg.com/uploads/1/3/1/4/131406800/mebekovejanelu.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/1/0435/8697/7949/files/8390734071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/25030689780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/parozone_bleach_safety_data_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/cetosis_en_vacas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/23728267772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4051/7793/files/microsoft_az_103_dumps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/canon_printer_scanner_driver_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/93580764728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/7525653334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2040/files/14100294832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/30712985524.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

Related samples 7

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_off00005bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB7 5112 bytes
SHA-256: 67ac13bff16a2d79dbdd7823c4a3a77b174701b4e8eff03a4286cfd95deb643e
font_01_sfnt_off00006cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 10564 bytes
SHA-256: 297d45783c6a9aeae9969ede5005d9dee9c5ae5984a593526170cfe1ef06973d

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