Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac6f5bd04450c8e7…

MALICIOUS

PDF

43.6 KB Created: 2020-08-26 22:39:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 527db87e6ef7a1027b460e1405b7d040 SHA-1: 53eb8d5b9639a1283b0189424deff1a2346c10e7 SHA-256: ac6f5bd04450c8e7df3ffd6b8bb6d631959ee53fdc0045b04b5d5dbb36a80fea
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Nike brand guidelines' and includes the malicious URL. Additionally, the PDF contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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=nike+brand+guidelines In PDF document text
    • http://files.parknknit.com/uploads/1/3/0/8/130873838/sinesumuxasomobuxof.pdfIn PDF document text
    • http://files.florencejoelle.com/uploads/1/3/1/4/131453302/buduluxafu_xefizivemavo_kumeredudavel_fetegeg.pdfIn PDF document text
    • http://dexawewin.adriancarper.com/uploads/1/3/1/8/131856907/7124497.pdfIn PDF document text
    • http://files.lindaqphotography.com/uploads/1/3/0/8/130814636/571235.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/1/0433/9567/8359/files/acercate_a_la_quimica_larousse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9606/files/wordly_wise_book_12_lesson_5_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0453/8528/files/aeropostale_printable_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/bekunedofotupor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2963/4970/files/abstract_algebra_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5671/6183/files/55003898683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/72132905481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/52480698559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/89393082812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/ketukigalanif.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 6

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_off00006c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C80 5168 bytes
SHA-256: 8dc4c692894139bd2492b591b4e110a077e63cd216ffc738f7e96470efba19ea
font_01_sfnt_off00007e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 10564 bytes
SHA-256: 10e88ab462b9f6437bc33fb9d811c0eb49adf6bd47f8ee127311e342c85dc606

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