Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd0cde357788101…

MALICIOUS

PDF

43.2 KB Created: 2020-08-23 07:28:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce0091b67359f8927c69211a31b358a8 SHA-1: 7914d1a1e531ae6602981b9778a84056121f11bf SHA-256: cdd0cde357788101c99657bf328870b323349bb450f60ea9aa0daad76693fb1e
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 it redirects to known malicious infrastructure. The primary redirector URL is https://ttraff.com/pify?keyword=advanced+cardiac+life+support+guideline. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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=advanced+cardiac+life+support+guideline In PDF document text
    • http://files.thestoryofkanji.com/uploads/1/3/1/6/131606343/6635522.pdfIn PDF document text
    • http://vadara.straitfromthefarm.com/uploads/1/3/0/8/130873867/renametuzigonef-jonuzefupavat-fijuxi.pdfIn PDF document text
    • http://files.mdt-agilityability.com/uploads/1/3/1/3/131379894/kiseg.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/1/0434/3437/7372/files/el_caliban_y_la_bruja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/ritama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3499/5870/files/introduction_to_chinese_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/5663158552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/zisulos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/50469716929.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 6

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_off00006af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF2 5372 bytes
SHA-256: b2291afe8912fd54278f864b23165c185f27cb75f810921359bc5af4b56d216c
font_01_sfnt_off00007d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D49 10140 bytes
SHA-256: 8c7e69fa6f640c1043a46ed853f7a21135629774487a059c8ccc2aa49558f4e0

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