Malicious PDF — malware analysis report

Static analysis result for SHA-256 86bb60ad3ad0fc5c…

MALICIOUS

PDF

33.6 KB Created: 2020-08-19 00:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15c31727c0c58ebcfa303c3241a02a6c SHA-1: 81d4d5d840840e5cb31d42fca150f8d3d8dd8e02 SHA-256: 86bb60ad3ad0fc5cd7c5d8844f233135acf9d838bdf1af531cc93e5c561b4268
162 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO poisoning. One prominent link, https://ttraff.com/pify?keyword=bitdefender+free++for+windows+server+2008, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this lure and other URLs, suggesting an attempt to direct users to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=bitdefender+free++for+windows+server+2008 In PDF document text
    • http://files.atlaswellness.org/uploads/1/3/1/1/131164474/ruzati.pdfIn PDF document text
    • http://files.elevatechurchli.org/uploads/1/3/1/4/131452988/e7575ef08869142.pdfIn PDF document text
    • http://files.talleylakehouse.com/uploads/1/3/1/4/131453260/lutir_turezifowo_nawuxelozabax.pdfIn PDF document text
    • http://files.raleighgardiner.com/uploads/1/3/0/8/130874110/6961390.pdfIn PDF document text
    • http://tewiwidu.abclocksmithsadelaide.com.au/uploads/1/3/0/9/130969858/1366773.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/1/0434/4764/8412/files/23293759795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/so_high_john_legend.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/73380169867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/96300648150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/7880948776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/60053927730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/66612713019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/646640214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1558/files/besiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/43085373284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/adjektivdeklination_dativ_bungen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7802/9213/files/wedding_planner_business_plan.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 5

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_off00004548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4548 5328 bytes
SHA-256: eb4b74139c557102bf54f56ef8760ff6c917e38f1a1fc3c75d9233813d3c1c0b
font_01_sfnt_off00005797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5797 10068 bytes
SHA-256: ae95843bf2ad36a3eb9536438c3d69d90cb01f026cf068ffadf6cb15b31840bf

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