Malicious PDF — malware analysis report

Static analysis result for SHA-256 9253d5046d0f69c2…

MALICIOUS

PDF

47.2 KB Created: 2020-07-28 17:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e8dab480c3d908fbc2257d13a798c55 SHA-1: 247880e8e0f6bdfb8e7d8f0d88f987a9a33f42b4 SHA-256: 9253d5046d0f69c24b31dcaf3cd7ff4b15757283bf1661bee69ed36e9c7119a2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a PDF SEO link farm. Another heuristic flags a link to known malicious redirector infrastructure. The primary attack pattern involves luring users to external sites via these links, likely for malicious purposes. No scripts were extracted, and the document body was unreadable.

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=green+hill+zone+music In PDF document text
    • http://files.sitesofpassage.org/uploads/1/3/2/7/132712096/gekavikilan.pdfIn PDF document text
    • http://files.whatsthegfc.com/uploads/1/3/2/7/132740564/zesuf.pdfIn PDF document text
    • http://files.winsberg.net/uploads/1/3/0/7/130739918/penizeniga-lebowejefime.pdfIn PDF document text
    • http://files.longislandswimschool.com/uploads/1/3/1/0/131070420/tefuvawumonesagabu.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/1/0439/7573/7502/files/vakos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/51439678738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5623/3638/files/17864345599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/sinudomuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/21281449983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/wororo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/bufifolaxoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/dikowafinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.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 8

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_off00007072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7072 3616 bytes
SHA-256: 77e5976e82a7696e1c9b59b00981cbf51d5c188088acd280cff6364718888ea2
font_01_sfnt_off00007d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D51 4712 bytes
SHA-256: c8649c9347c08917eee0086bd5e7974f403febd8d20620dd739cba7c7da92a51
font_02_sfnt_off00008d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D19 10116 bytes
SHA-256: e093ba019c63632b0c72e950570380b9e0aa0118c7bab0136979ed1ba5d58a55

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