Malicious PDF — malware analysis report

Static analysis result for SHA-256 a36a1698222863e6…

MALICIOUS

PDF

44.5 KB Created: 2020-08-27 14:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90f03801601cce4fb16da485df79e8e0 SHA-1: 088f819506dd4de90e2c156ac9fa45cd10cffa80 SHA-256: a36a1698222863e64cff24ee8b6a90e7f645a361ce8d459fc3ce456cf8dd78f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'Tomb of horrors guide' and the malicious URL, suggesting a lure to entice users to click the malicious link. This indicates a likely phishing or malware distribution attempt.

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=tomb+of+horrors+guide In PDF document text
    • http://files.beachtownrattan.com/uploads/1/3/1/4/131438819/dakemowiwuniv.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/1/0428/9550/7622/files/60853908982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/free_timesheet_calculator_with_breaks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/92559002561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4751/0435/files/balance_sheet_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/80673598883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/10411613837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/2694/8767/files/pirozidupuzexitejogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/63334479786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1877/8781/files/wazowerupari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/zowopub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/unaccompanied_trumpet_solos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/tifabuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/real_analytic_function.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 3

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_off00007033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7033 5168 bytes
SHA-256: d7ce456fc3d9a20b00593a33ef17a55e08c01b09b2b94875fe18aaf9a2953c36
font_01_sfnt_off000081a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 10456 bytes
SHA-256: a0bc9838d3ccab453bde66a94efcbd46baa0df9640bc5d5ada052d15dde57089

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