Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea8c724d89348a98…

MALICIOUS

PDF

37.5 KB Created: 2020-08-31 14:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4a66aa3a42d4e7c7dc0d937a06c8cc0 SHA-1: e9c73fa7eef26c19ee7844025e712404a3ac380a SHA-256: ea8c724d89348a980637dce6fb14373c35ca9dbd7b53ac4b26c29f69e4859e39
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it features a PDF link farm, with many links pointing to Shopify-hosted PDFs. The primary malicious URL identified is https://ttraff.cc/wix?keyword=whistle+notification+tone. No scripts were extracted, but the presence of malicious links suggests a phishing or malware delivery 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.cc/wix?keyword=whistle+notification+tone In PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0459/9378/7559/files/95370840103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/pipopeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5783/0298/files/95748327854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5522/5751/files/84276872096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9576/files/molecular_biology_mcq_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/zudizepalafuderi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/cribriform_plate_optic_nerve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/13749990347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2824/5654/files/81859085000.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/69b86f_2440507e8df841c78dcd4015d62c05ed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_37c45fd240a541bcb1f82a62aa723d5d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9e555a8fb9454e799ab6494884fca9d0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3e9e83_b843d309f7f743b78398ff7b6020aab4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_20a01afeb61c41a1a41cc2e635511fa9.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_off00004e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E02 1696 bytes
SHA-256: a63dc7203ceba2031beaf1d50b83973ffdd0483474384fa5780efc3deacec6ca
font_01_sfnt_off0000562c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x562C 4888 bytes
SHA-256: 068e49cd26a760e13bad8036712b8ed8a4750049633ccbd0010233830babdd7a
font_02_sfnt_off000066e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 10016 bytes
SHA-256: 199ef8fdf42762fb537132daeeed4d6c142f53f5192db475dc14cb322d400ab2

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