Malicious PDF — malware analysis report

Static analysis result for SHA-256 23cc58e0dec53a42…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 19:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9b2f89ac231b9309bc44b23bf27f304 SHA-1: 821082489e23f78b7ac130f9a4534756cd322f2a SHA-256: 23cc58e0dec53a42eff1c2972c338da318755a5d466b991e6844f18f79845d66
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=bringers+of+the+light+pdf', is identified as a known malicious redirector. This suggests the document's primary purpose is to redirect users to potentially harmful content or phishing sites.

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=bringers+of+the+light+pdf In PDF document text
    • http://files.wrfw887.com/uploads/1/3/1/4/131452811/3d661283624.pdfIn PDF document text
    • http://files.fairlie.info/uploads/1/3/0/7/130775014/7640513.pdfIn PDF document text
    • http://files.patteecanyonoutdoorschool.com/uploads/1/3/1/1/131164350/1768387.pdfIn PDF document text
    • http://files.clarkscienceolympiad.com/uploads/1/3/1/6/131606630/17051788.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/1/0437/2529/1674/files/bevapeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/zavebogufuxake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/3508750778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/shell_shock_hacks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/rome_total_war_wiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/33321610199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/lemizeravudifap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/96265497163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4123/2795/files/97436314629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/73560100897.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 7164 bytes
SHA-256: a7c70f299fefd65ddab38b084b93db4a002dc80bea30a5fe6cddbe87589cfb69
font_01_sfnt_off00007b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 5144 bytes
SHA-256: 9c7c2b9ec78a5a552f31ea6ba98f1082b504a933b2f3c32f51729c56cc220c23
font_02_sfnt_off00008ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEB 10524 bytes
SHA-256: 32babc6f83b1edcab841c2967f27385c3ec1f9e3c5da7873338e339d1eeef0f3

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