Malicious PDF — malware analysis report

Static analysis result for SHA-256 6972537040dea6f5…

MALICIOUS

PDF

39.9 KB Created: 2020-08-23 09:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b968eaaab9909a129bf656f8e02c1a95 SHA-1: 145c53e94f2bb6178b0aba0d68e1f707b96e2adb SHA-256: 6972537040dea6f50107341424205eee5342c00748d8659f7d333bf9057b886a
194 Risk Score

Malware Insights

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

The PDF contains multiple links, including one pointing to a known malicious redirector, ttraff.cc, with a lure for 'Spoken English PDF Telugu'. This redirector likely leads to a phishing page or malware download. The PDF also hosts a large number of links to other PDFs, suggesting a link farm or SEO poisoning attempt to drive traffic. The ML classifier strongly indicates maliciousness.

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.cc/pify?keyword=spoken+english+pdf+telugu In PDF document text
    • http://files.goldenhoursc.com/uploads/1/3/1/1/131163953/b8865.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/1/0435/7960/5147/files/nupovunadaraxegesufopov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3582/8124/files/possessive_adjectives_exercises_1o_eso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/27150421132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5676/files/andaluza_enrique_granados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/letowawozujevove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6418/8312/files/92869206381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/deved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/60227868116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3264/8602/files/nc_dmv_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/7374287681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/vefezutavetubarubuvem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/bank_management_system_project_documentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/sojenepesidonemi.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 1

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_off000054f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54F6 5164 bytes
SHA-256: 04dc5f32e818dd5355b59100458a864e0d11354dc0441d09e4058e229eebfdd8
font_01_sfnt_off0000668d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668D 13288 bytes
SHA-256: 931c9120b2a8286dc58d9b9e992fa90df79ea1e0a25edfa3824c29d297fdcf1d

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