Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59df03813d38336…

MALICIOUS

PDF

34.4 KB Created: 2020-08-27 21:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44d34fe547ecdf2e1610577c9cd5fa51 SHA-1: a1380ed93a7252ad131bec28fb0a9681bd51ee4e SHA-256: d59df03813d383366280ed5d44cf910b9a0dc0fa5e1e079f632e25ea05984a88
194 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The document body text, though garbled, contains a URL that matches the malicious redirector, suggesting the document's primary purpose is to drive traffic to malicious sites. The presence of a link farm and a malicious redirector indicates a likely phishing or malware distribution attempt.

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.com/pify?keyword=let+us+c+by+yashwant+kanetkar+15th+e In PDF document text
    • http://files.vendettanailbar.com/uploads/1/3/0/7/130739069/8613156.pdfIn PDF document text
    • http://files.miami-mustangs.com/uploads/1/3/0/7/130775275/1666390.pdfIn PDF document text
    • http://files.jor-designs.com/uploads/1/3/1/4/131452938/dedexo.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/1/0435/8651/9203/files/tobuwonafukozela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/17397800093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6880/7578/files/78250188647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/36899057863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/scribus_vs_publisher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/76813292066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8446/2745/files/acta_constitutiva_formato_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/conditional_formatting_google_sheets_entire_column.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/tizuvupigujusezupagekudof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/43431137047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/taguzetotuxibonategabuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/exponential_equation_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/8084/3163/files/tozadudifemewe.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 2

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_off00004840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4840 5368 bytes
SHA-256: 6b7331e00b1b85fd9f2b2596778a883e2d6797e89ff830058a18629399b24427
font_01_sfnt_off00005a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9A 9908 bytes
SHA-256: 443076909e4623ad196f8a1d5860649af1acb285c75d83252d8c01733b3bd14f

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