Malicious PDF — malware analysis report

Static analysis result for SHA-256 b21d32a293074393…

MALICIOUS

PDF

41.2 KB Created: 2020-08-12 15:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51df5b7c17169ccc43d48da8312ab9be SHA-1: 9ddeb591d71d62dd0968ad30f7aa723808c1a383 SHA-256: b21d32a2930743939d4ebca0e7043bc4db7b3417b1b6898f53e1142262244f7c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/wb?keyword=multiple%20transformations%20worksheet%20with%20answers', is flagged as a malicious redirector. This suggests the document is designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=multiple%20transformations%20worksheet%20with%20answers In PDF document text
    • http://files.adelaidehulahoopers.com.au/uploads/1/3/0/9/130969546/944760.pdfIn PDF document text
    • http://files.strategicsolutionsint.com/uploads/1/3/0/9/130969992/198142c4772.pdfIn PDF document text
    • http://files.kbkornhole.com/uploads/1/3/1/4/131438891/zawavapavukeped.pdfIn PDF document text
    • http://files.kaylaschmidt.com/uploads/1/3/0/7/130776826/lisigapiresa.pdfIn PDF document text
    • http://files.theressomethingaboutmaryfulton.com/uploads/1/3/0/7/130738894/2802425.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/87899810879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/98166317492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/25238058343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/muzapugokezim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/90840899715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0147/8300/files/11236683981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/linuxal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/module_8_aerodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/nenibesarojixubotop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2375/3635/files/rapikapate.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_off00006297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6297 5304 bytes
SHA-256: 52c3154a5454b03cbe5d6611c635d553ab4416c4a2d1db314f7856f6558774e7
font_01_sfnt_off0000748a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748A 10364 bytes
SHA-256: 1c465fa22475ee9cda1c8ff51db7ccbe052cf4c89afb0eb4af9f50deb7e72e2f

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