Malicious PDF — malware analysis report

Static analysis result for SHA-256 6462426ba893533d…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 05:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fea2561eccfd655c922c13efc656a66 SHA-1: fb1c1476f0dbb27822fe2f548dfbb29b23f805c5 SHA-256: 6462426ba893533d23552c3768bdc40bc8f3ae762ba3259b563168e08824010d
194 Risk Score

Malware Insights

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

The PDF contains numerous links disguised as a worksheet, with a primary redirector pointing to a malicious URL. The heuristic firings indicate this is a link farm designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to exploit user interaction for malicious purposes.

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/wb?keyword=infinitives%20worksheet%20with%20answers%20pdf In PDF document text
    • http://files.spaceliftinteriordesign.com/uploads/1/3/1/4/131409755/1776386.pdfIn PDF document text
    • http://files.centerforartandhealing.com/uploads/1/3/1/3/131379382/313933.pdfIn PDF document text
    • http://files.titaniumflower.com/uploads/1/3/0/8/130814308/8365443.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/1/0440/6630/8246/files/ars_paulina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/vaxoretejewabefavuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/70230741645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5710/0453/files/fifulol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/xatumunap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/dovalisodugerinebopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/advanced_wastewater_treatment_technologies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/niratogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0594/9590/files/37897608228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/bearing_design_data_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/tuwexubofoboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/monumumoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2512/1959/files/bleep_sound_effect_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7760/7324/files/sejojisaded.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_off00006004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6004 5252 bytes
SHA-256: 50136598dc636455d777b800e2573d102d9c1b91fefccfadf81123376ed9ff6c
font_01_sfnt_off000071f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F0 10656 bytes
SHA-256: c5db28390fea740178545e0e74921c7e4836b8660c061f7c3accf069df76e9de

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