Malicious PDF — malware analysis report

Static analysis result for SHA-256 676a998bebc51451…

MALICIOUS

PDF

39.8 KB Created: 2020-08-16 00:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c385a7d8fdcc02cd4af9a0cf1fa7bbff SHA-1: 306179f37519e178c495fda1966ed40cf2e36b85 SHA-256: 676a998bebc514519044438ab17268a9a7cde6b6bf2f94c9ba32792f10688c25
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 redirector link to 'ttraff.com'. The document body also contains this URL and references to 'couper pdf en deux parties', suggesting a lure for users seeking document manipulation tools. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm strategy to distribute malicious content. The ML classifier strongly supports the malicious verdict.

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=couper+pdf+en+deux+parties In PDF document text
    • http://files.oregoncabinetdesign.com/uploads/1/3/1/3/131383720/9532257.pdfIn PDF document text
    • http://files.workinnvision.com/uploads/1/3/1/3/131384018/zudemesenodevakani.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/1/0437/7195/3301/files/ruregajeretivewus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/wikigekojutap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/frases_completas_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2310/5189/files/16988255139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/wenedopigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1797/7504/files/zetakifafezax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3999/7595/files/blanche_neige_conte_court.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/english_speaking_course_file_download.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_off00005a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A41 4976 bytes
SHA-256: 60fca8c9eccc6bf462ac8a0516b1335734ab228e6188aa7843dd25daa55c6baa
font_01_sfnt_off00006b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B43 12080 bytes
SHA-256: 92253d165341cca6b67e8f9be36cdda3676b68ce1d6e4f3694d1aa5faed2668b

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