Malicious PDF — malware analysis report

Static analysis result for SHA-256 a187f1ddd9e32d3e…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 16:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 504d5eb22e9a48cc50f664faf6cac53c SHA-1: 9eed896622320571b04d8e02395ab685eb9a9aa2 SHA-256: a187f1ddd9e32d3efa9942b25fa9d7095a74e3c9602015db767e7e1542892e48
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking URLs, suggesting a lure to trick users into clicking the malicious link. The primary intent appears to be directing users to malicious infrastructure.

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.com/pify?keyword=mysql+workbench+ubuntu+14.+04 In PDF document text
    • http://tugakufuk.retrofitzclothing.com/uploads/1/3/1/4/131452883/5472136.pdfIn PDF document text
    • http://files.faithinhealingmassage.com/uploads/1/3/0/9/130969140/21677.pdfIn PDF document text
    • http://nipewasev.plantsandfriendstogo.com/uploads/1/3/1/0/131070450/fovajilig.pdfIn PDF document text
    • http://files.kamawellnessperth.com/uploads/1/3/1/4/131453111/faee01bb6bf2cf.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/1/0433/0536/9758/files/canterbury_college_school_uniform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83300066175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/uc_browser_mod_apk_terbaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/unbreaking_3_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5430/1338/files/70925669225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/28501159073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/57120145409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/93394497446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2190/8640/files/93139211202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/larson_algebra_2_workbook.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_off00005ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC5 5520 bytes
SHA-256: 0ce4a112e5c07d12153e3a85847ae46339edb2724712ca0c67a5ef83e5da5bce
font_01_sfnt_off000071ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BA 10256 bytes
SHA-256: 1187b4db9d8deb42aaeb5569ba361382de88f0749e3adabc72055ff83c835c4b

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