Malicious PDF — malware analysis report

Static analysis result for SHA-256 1025fb71aea10503…

MALICIOUS

PDF

60.4 KB Created: 2020-08-08 01:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf1e2736507f00df8aab22e8c202ae25 SHA-1: 81944a2c6529b5f1d4658a7c96f306a2fc750e6c SHA-256: 1025fb71aea10503af42318a7dd40f042ca7bcb22a72b2916770fa6025ec337c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.ru). The document body, though heavily obfuscated, contains a URL that matches the redirector. This indicates a phishing or scam attempt designed to lead users to malicious infrastructure.

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=chain+rule+derivative+practice+pdf In PDF document text
    • http://files.ellebakerinteriors.com/uploads/1/3/0/7/130775520/9319059.pdfIn PDF document text
    • http://dupekol.notyourfathersadvisor.com/uploads/1/3/2/6/132682076/243660.pdfIn PDF document text
    • http://files.ncwaonline.org/uploads/1/3/1/6/131637224/3705227.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/1/0431/1960/7962/files/sajokizejewor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8244/0103/files/87560874549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/whirlpool_washer_ultimate_care_ii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/8503691255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/dmv_form_mv-_104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/sonudaboduronizeguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/58971181446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/31844688775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0403/5221/files/bishnu_prasad_rabha.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/3071/3244/files/antipsychotic_medications_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/mapa_carreteras_pais_vasco.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 2

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_off0000a0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A5 5032 bytes
SHA-256: f86b72b0953bdc1e75ee65460b44a0d53531ec0dc0bf41c02b2444a85e5cf900
font_01_sfnt_off0000b1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C2 16276 bytes
SHA-256: 55a51185c738a3191e94333923cf123b2b33e75b15fd0cf0f92d4ff5b6ba6082

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