Malicious PDF — malware analysis report

Static analysis result for SHA-256 439816fd109d036f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 18:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75fc5ecb20747687141bf6a5f9757152 SHA-1: 38e32e7264a77a21c04383dd7fbe8351071850d6 SHA-256: 439816fd109d036f27a4d8c0db0c4e605821ff024e5a72f0dc61639316bbe6b2
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically disguised as a golf watch manual. The primary malicious URL identified is ttraff.ru, which is used as a redirector. The document body, though heavily obfuscated, contains references to the golf watch manual and the redirector URL, reinforcing the lure. The presence of numerous embedded links to external PDFs, many hosted on Shopify, suggests a link farm tactic to obscure the final malicious destination.

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=bushnell+neo+golf+watch+manual In PDF document text
    • http://sadaxido.winegrunt.com/uploads/1/3/2/7/132712358/4a62d20ade015e1.pdfIn PDF document text
    • http://kezenemif.pilgrimcamp.net/uploads/1/3/1/4/131438860/1e3016a60e85cd.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/1/0429/3728/6812/files/bikadumijojuwebotagovag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/97772383883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/apostila_tecnologia_da_informao.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/dobekojifebulef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7241/6931/files/juxemoxasawotikaweli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4099/6518/files/report_bug_microsoft_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/77587992752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/triangle_symbol_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7424/5023/files/89011079326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/1754038017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/67721608229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/8152297183.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_off00006147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 5340 bytes
SHA-256: 2dd9fb897abd2a650e845f3bc29dbc47d6bb1c382a97ba418c6de77f7f6f26d9
font_01_sfnt_off00007365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7365 10408 bytes
SHA-256: ad83ce32ca181e022e10c0a5b07325a11a11c036c8d54fab83d9615908c9c4ec

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