Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebdc3476f90eb62…

MALICIOUS

PDF

46.6 KB Created: 2020-08-27 20:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c013863ba48d429c7fd9b549e770eeda SHA-1: 72be48d0b8e611b91ee1f78892e8d3c1c120a9f7 SHA-256: cebdc3476f90eb627e0b77fdde44043933e48d73351653a989efd8010fb00b7d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=merriam+webster+collegiate+dictionary+11th+edition+app'. This URL is designed to redirect users to potentially harmful content. The document body, though heavily corrupted, contains fragments of the same URL and other Shopify URLs, suggesting a link farm or SEO poisoning attempt. The overall structure and the presence of multiple external links indicate a malicious intent to redirect users, 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.cc/pify?keyword=merriam+webster+collegiate+dictionary+11th+edition+app In PDF document text
    • http://vepuwujil.fatzdomino.com/uploads/1/3/1/4/131482992/21b082.pdfIn PDF document text
    • http://files.loesshillsalliance.com/uploads/1/3/1/1/131163691/basadabaxajin_wojivatujasifug.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/1/0434/8480/7334/files/kore_sore_are.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/medojuzapafug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/fifo_method_excel_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7487/1715/files/castle_wars_air_balloon_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6250/files/three_s_company_theme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/83897925189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/nicovideo_downloader_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4890/2560/files/60839934175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7098/8196/files/leica_sl_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/6711520799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/vagoratugevomegujesaxuz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00005cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEF 5880 bytes
SHA-256: 0c14d312c59b3f14134445bff48a0bc2a31654a91ed245253142510dcac94513
font_01_sfnt_off000070d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D5 10828 bytes
SHA-256: efbdc6c341897a72bb69836229950b329b6fc206cfad55901a90e3dc515ea9a2
font_02_sfnt_off00009604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9604 16820 bytes
SHA-256: cac148788f3bfa1bf0c404b5350c0549ab072eca5b07f651a878590cac4b605c

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