Malicious PDF — malware analysis report

Static analysis result for SHA-256 18956d89a372f341…

MALICIOUS

PDF

47.6 KB Created: 2020-08-19 21:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 465e5aeb58adc0b2f782c15ef08e32c8 SHA-1: dc5c93dd9598c00162cafe65a00c347ad5f3200a SHA-256: 18956d89a372f34152de69ee86e7c8658e7c42ee53745c1a51ca45a862299895
162 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a redirector link to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure. The presence of many PDF links, some pointing to benign Shopify URLs and others to unknown domains, indicates a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious.

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=advertisement+video++free In PDF document text
    • http://nepaxu.yesindustrialsupply.com/uploads/1/3/0/9/130969280/212746d.pdfIn PDF document text
    • http://files.cchsguidance.com/uploads/1/3/2/6/132681725/fibigofefoke.pdfIn PDF document text
    • http://rerut.traceyknapp.com/uploads/1/3/0/7/130776132/6182988.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/1/0429/8450/5498/files/labor_economics_borjas_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/70935522586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/juxikisagulelufolamadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4196/2646/files/36232546709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9301/5195/files/66350508979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/mufiroxeviwafof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6752/3743/files/62205559963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/xogenakoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/24217517677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8741/3923/files/16693760982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruxejuvekega.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 8

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_off00007b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B99 4860 bytes
SHA-256: 49bd660285c0c65c30bb9754b030c94ecbd2e8661d88ab8d02b11adcc713f223
font_01_sfnt_off00008c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C12 11080 bytes
SHA-256: 8ea129a37b10dd063835dd0390d40f3376de680324bf479ac5158e0c0f0f4136

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