Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4bb1cc3a503502…

MALICIOUS

PDF

42.2 KB Created: 2020-08-19 21:49:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66aa46135053bff1d395af8eca4261b7 SHA-1: c083163fc77c274f2fc71a8d80e66e47af74a53a SHA-256: 4c4bb1cc3a5035026ca565c9dbab0baef59737d1afca96abf088fde5dbb7b1e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a 'PDF_SEO_LINK_FARM'. One of these links points to a known malicious redirector. The document body also contains text related to 'resttemplate disable ssl verification' and the primary malicious URL. The overall pattern suggests a link farm or redirection scheme designed to lead users to malicious content.

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=resttemplate+disable+ssl+verification In PDF document text
    • http://vuxopad.medtechwearables.com/uploads/1/3/1/3/131379730/7769098.pdfIn PDF document text
    • http://files.thelightwithinwellness.com/uploads/1/3/1/4/131406835/mizovegerij.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/1/0428/8951/1068/files/finale_export.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0422/1846/files/peter_answers_secret_revealed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/zeruwaxosuturoxizotideb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/catalog_design_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7952/2722/files/80978995865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4722/2422/files/50666238271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/gavowakepoludopepubigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/gudujozatugotaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0497/files/44560723361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/98836036364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5026/files/minecraft_xbox_360_mod_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/90877827774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/madewazixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/78984319063.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_off0000643e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643E 5508 bytes
SHA-256: aed2483aae0c390867ea26c35ea4e7131f905216876feb3d7654e3896d935485
font_01_sfnt_off000076e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E3 10808 bytes
SHA-256: b3503d19da21ef00ffeb38877e5386a980e017d77f68341b1fee8da9ca9b156a

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