Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bff651961cf03f2…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 08:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46027e931143a0f8096b0e59cab1eb94 SHA-1: 9959b17b33a28a261c7c89f3fb3e5b48461d4657 SHA-256: 7bff651961cf03f2ca52e3fdb4df4ada1b1e667f4a4704b3a66b9fd903258478
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The primary malicious URL, https://ttraff.com/pify?keyword=bushcraft+101+t%25C3%25BCrk%25C3%25A7e+pdf, is identified as a redirector. The document body, though heavily obfuscated, contains this URL, suggesting a phishing or scam lure disguised as a free download.

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=bushcraft+101+t%25C3%25BCrk%25C3%25A7e+pdf In PDF document text
    • http://files.limitlessptny.com/uploads/1/3/1/4/131438538/difek.pdfIn PDF document text
    • http://files.philadelphiahappenings.com/uploads/1/3/0/7/130776720/9579335.pdfIn PDF document text
    • http://sasikar.escdu.org/uploads/1/3/1/8/131872225/lopusesudovegola.pdfIn PDF document text
    • http://files.matusnursingreview.com/uploads/1/3/1/4/131438216/rufaliziweninazeben.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/1/0435/4431/4011/files/laboratory_report_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/puzegagala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4498/7292/files/65062855490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/gusepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/64872725905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9607/0560/files/bikegom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/wirikogogadimogasuzedugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/89045111259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/ems_field_guide_bls_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/mawekupepufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4804/9572/files/onii_chan_dakedo.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 7

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_off000066bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 5820 bytes
SHA-256: db6545218ae5b97c0e417024092ca7e620d8b529a3b772b80ee552df994c036b
font_01_sfnt_off00007a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0E 11388 bytes
SHA-256: b52e0e9153dd1862839bb633efe4f2e6c5978015e728de3b209e1d1cd31f2bb1

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