Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4e430508352b53…

MALICIOUS

PDF

37.4 KB Created: 2020-08-18 23:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b37952a4a2de160a554dfb8e4c6ee684 SHA-1: d539f18e93053ac79e9a56151c70af19f6c88df9 SHA-256: 5b4e430508352b53fc4453068dc4d61f841c93ce7fd9c45e869408e4cb104ec3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified as `https://ttraff.ru/pify?keyword=childhood+trauma+questionnaire-+short+form%2528+ctq-+sf%2529`. The document's structure and embedded links suggest a phishing or scam attempt, likely using the guise of a questionnaire to entice clicks. No scripts were extracted, but the presence of numerous external links points towards a malicious redirection strategy.

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.ru/pify?keyword=childhood+trauma+questionnaire-+short+form%2528+ctq-+sf%2529 In PDF document text
    • http://files.reelmemoriesvideo.com/uploads/1/3/0/7/130775510/2599952.pdfIn PDF document text
    • http://files.clbchouston.org/uploads/1/3/1/4/131452988/bavulubitugujegoxo.pdfIn PDF document text
    • http://files.gaggiamanualservice.com/uploads/1/3/1/4/131452950/d6af5.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/1/0430/8893/7120/files/36389817549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2666/files/lalojuxol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/munubojazovadobifezet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/classification_of_numbers_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/78229001021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0189/4296/files/berr_admin_react_admin_dashboard_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/american_pie_watch_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/raxepoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/leadership_and_leadership_skills.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 2

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_off00005280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5280 5480 bytes
SHA-256: ea744ef8645468587315120685d3ff8571813834ccc21ce435f08481204df280
font_01_sfnt_off00006509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 10488 bytes
SHA-256: 629c53403d3412fb7a99ce15cb87de1342dd7e729b3f6c90528aad7bf7828140

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