Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d2c0f516155db19…

MALICIOUS

PDF

40.0 KB Created: 2020-08-24 17:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 757a488a302e22f539b6c22373f785d8 SHA-1: bfab3fb01f78cd10f4baa316fbfd18737ea8f716 SHA-256: 5d2c0f516155db193e9b85400dc0e2ac6734e277f79541af00af5e75f1ec6d57
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to radiology and a URL that matches the malicious redirector. This suggests the PDF is designed to trick users into visiting a malicious site, likely for phishing or to download further malware.

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=intermediate+cuneiform+fracture+radiology In PDF document text
    • http://files.jbdpta.com/uploads/1/3/0/9/130969356/1484727.pdfIn PDF document text
    • http://files.ajeplanners.com/uploads/1/3/1/4/131406816/sifojopese_nidukuzinagimo_xutokajofuzi_roxurugar.pdfIn PDF document text
    • http://buwiwe.anahataheart.com/uploads/1/3/1/3/131398140/6965856.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/1/0440/5110/3894/files/kontakt_5._6._5_r2r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5576/6942/files/platform_toolset_visual_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/welinoxoromuwutizefawole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2479/2224/files/15547588908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/witudojoruwudarufef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0318/2243/files/kasoxiponogisujitibafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/77499653247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9721/7440/files/tratamiento_de_la_sinusitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6012/8931/files/inserir_assinatura_digital_em_arquivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/80679091996.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3D 5200 bytes
SHA-256: 06c668a25f50ca530b56b8d2a516c9c4d00c3b9448072b953dc639d0897a8239
font_01_sfnt_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 10376 bytes
SHA-256: 34b772799bded767a2e4e36b6eb398020c7e8d1a0ff7634f7c504b4280324c5f

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