Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ec6df12e85d4e6…

MALICIOUS

PDF

35.0 KB Created: 2020-08-09 07:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a86621c1e68ee4a8cbb9154fbaea3dc SHA-1: b1ea523d0c928226040bbce53212405323639e09 SHA-256: d4ec6df12e85d4e6f60e264b2f642c9115407fcfa264592f926113dd966e2db0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=elements+of+cartography+book+pdf'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm used for SEO poisoning or distributing malicious content. The ML classifier also 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.
  • 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=elements+of+cartography+book+pdf In PDF document text
    • http://files.sixthdaysnacks.com/uploads/1/3/2/7/132710780/rejadedemu.pdfIn PDF document text
    • http://files.skin-spa.net/uploads/1/3/0/7/130738894/nafeni-gefamofuzafiwa-xapagej-ruzus.pdfIn PDF document text
    • http://files.momentumdavis.com/uploads/1/3/1/3/131383842/renazitawomefuru.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/1/0431/0269/9681/files/mufasafiviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/gekaxejekididorisopemarug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/champion_3500_watt_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/40017510390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/english_words_in_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7749/files/87357255346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/92257555392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/elements_of_applied_bifurcation_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/gawuzolafelupomube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5827/8050/files/biomedical_waste_management_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3349/2641/files/jakofeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/nios_dled_assignment_front_page_design.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_off00004a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A04 5832 bytes
SHA-256: a4363b42d26d5ce40da10b7b6d9eed0962d06cf12da8d349d6177c568fee8d81
font_01_sfnt_off00005db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB7 9740 bytes
SHA-256: 4ab52763f8be8982cc5f2584539c5c59f2f7f417c37720108db951243b347543

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