Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd0057081a9124b…

MALICIOUS

PDF

39.1 KB Created: 2020-08-23 02:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dd471f63dcb72ebd9e48b9fcc6f4e17e SHA-1: ed94db2b39a93f81211bd7e1f34e27f807d170b5 SHA-256: 1cd0057081a9124baeeede0b6c130992d9ed38735f10e2c6e63430317fdf100e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDFs, which is characteristic of a link farm for SEO manipulation. One of these links, https://ttraff.com/pify?keyword=fire+safety+plan+template+bc, is known to lead to malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness.

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=fire+safety+plan+template+bc In PDF document text
    • http://files.threeriversautomodelers.net/uploads/1/3/0/9/130969645/9672711.pdfIn PDF document text
    • http://wapud.omalleyfoundation.com/uploads/1/3/1/0/131069839/sijopidumutogu.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/1/0430/6026/5117/files/46202434614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/ancient_rome_map_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5233/5255/files/interesting_books_to_read_about_life.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/47291478506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/free_converter_to_word_document_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7850/7934/files/bizomubujaxegivevazuban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/essential_oil_diffuser_oil_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/88746223611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/anlise_de_contedo_bardin_livro.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 5

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_off00005c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C55 5360 bytes
SHA-256: 320adc145c1d41e924c5c32f9e34a4566cd66e1f3d386b383d63bf5db17ced32
font_01_sfnt_off00006e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E79 9848 bytes
SHA-256: d37644d76ccf7588c6d3ec3fc237e6d255c403b87b818ee54a9edbb723309f46

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