Malicious PDF — malware analysis report

Static analysis result for SHA-256 667b5d35df453e7d…

MALICIOUS

PDF

39.9 KB Created: 2020-08-22 10:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b2740aeb8d6214a711acedc7d422598 SHA-1: 5c40ff9693d1b386f790102c1411c7a29132a0ce SHA-256: 667b5d35df453e7d1724f2ebeff83e1d0232e1f017d62077ba6df1325351472f
194 Risk Score

Malware Insights

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

The PDF contains multiple links, including one to a known malicious redirector, ttraff.com. This redirector is likely used to obscure the final destination of the malicious payload. The document body and embedded links suggest a lure for users to download what appears to be a legitimate PDF, but which ultimately leads to malicious infrastructure. No scripts were extracted, but the presence of malicious links indicates an attempt to redirect users to a harmful site.

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=badminton+facilities+and+equipment+pdf In PDF document text
    • http://files.lsloan.net/uploads/1/3/1/4/131455398/484cd97f112f.pdfIn PDF document text
    • http://files.insideoutnh.com/uploads/1/3/0/9/130969791/vuxakunodonuvugakom.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/1/0428/9835/8432/files/1261535930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/fuxizetes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/59379652040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9083/6632/files/sevatawogor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/fluke_t5_600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7366/7225/files/36458145714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0927/2990/files/6th_grade_english_grammar_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/classroom_jobs_poster_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/bimora.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 3

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_off00005db2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB2 5380 bytes
SHA-256: 33e0affe7837efaed1971d2ab6474319fb4baa52ace25e89b470e98cad5a1515
font_01_sfnt_off00006fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEF 10324 bytes
SHA-256: 5d5ac4ae2ca1036eae92fe56db36373078669534384d8379c83621bc277c4789

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