Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd887df44f160a19…

MALICIOUS

PDF

42.1 KB Created: 2020-09-17 12:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b1e42e220c86c0dcef25583428193e7 SHA-1: 4914094c5d5264c4fe9cd3b0d52b63f8564d41ce SHA-256: cd887df44f160a193d4933adfb1cb37ff7b33e68b02d5ef38078d281f433047c
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.link/wix?keyword=sec+swimming+championships+2020+results'. This indicates a phishing or social engineering attempt. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier also strongly flagged this PDF as malicious.

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.link/wix?keyword=sec+swimming+championships+2020+results In PDF document text
    • http://wiwop.teleporter.services/uploads/1/3/1/3/131398285/gatejezudekixokisa.pdfIn PDF document text
    • http://files.enchantweddingmusic.com/uploads/1/3/0/8/130813731/b3434f71d195.pdfIn PDF document text
    • http://rufub.rafkasfareet1953-56.com/uploads/1/3/1/1/131164250/kedunipiditi.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/1/0428/9835/8432/files/siwizobudavegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/towofopizujugogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1386/0259/files/the_human_bone_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/linux_commands_with_examples_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/cbse_syllabus_for_class_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/nozogufotasaxedisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8919/files/delete_a_page_in_word_2010_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/definition_of_cellulitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5276/files/bubipade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/nupizijakujeduvedugesor.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 1

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_off00006604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 5816 bytes
SHA-256: c0697531d0f13415a5c1e75e54ed9f91422b5cf83958b695c1fde0e26997df6a
font_01_sfnt_off000079b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B5 9900 bytes
SHA-256: 17b1758619bf88838edf428a856bcccfc8e513e412bba4079d7ed1a2a375068a

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