Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cbb3017e9ff852d…

MALICIOUS

PDF

47.6 KB Created: 2020-08-12 14:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 467315650f9bc50211aa298bd7c18bbb SHA-1: 8c0259dabc6a2755be775c237310f372399a4fd2 SHA-256: 6cbb3017e9ff852d13f09193fcc6278078c8f56aa8f470d19e6b272f12d601be
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to appear as legitimate document downloads, but the primary link redirects to malicious infrastructure. The heuristic firings indicate the PDF is a redirector and part of an SEO link farm, likely intended to phish users or deliver malware. The ML classifier strongly supports the malicious verdict.

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=non+functional+requirements+example+pdf In PDF document text
    • http://vodadex.dianesikes.com/uploads/1/3/1/4/131437886/1921939.pdfIn PDF document text
    • http://rizukev.gourmetsofspain.com/uploads/1/3/0/7/130775732/kelubuxeru.pdfIn PDF document text
    • http://vuterop.beyondlagartococha.com/uploads/1/3/1/4/131410685/5530619.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2553/0005/files/willpower_roy_f_baumeister.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5110/2887/files/line_6_pod_xt_live_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/60464764090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6667/7655/files/87726262785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/wowejupagafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/tipos_de_anemia_en_animales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4387/2150/files/sexizezez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9743/0941/files/advantages_and_disadvantages_of_globalisation_in_zimbabwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/75388038102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6272/1688/files/cysteamine_hcl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/13977167889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6996 5348 bytes
SHA-256: 7a4fb02695aedf68fb7883faed1762ad453ef5d18cfcb27630fe32fa8e177ee6
font_01_sfnt_off00007baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAA 12316 bytes
SHA-256: 0ac2d389c3837f9d057bcfc76800fb1e8758b2b74e7f0a62752995ef6d9b27c7
font_02_sfnt_off0000a34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA34C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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