Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa2132df8475b7aa…

MALICIOUS

PDF

42.4 KB Created: 2020-07-31 06:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65ae8969927e3f8e6e8c469e33bdae22 SHA-1: 045e3fe34e8a29462f2c462db83e8a3f8b63cfb3 SHA-256: fa2132df8475b7aaf287f4186972cef27f23f5381247ad0fe0fe409b9de30bb7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits a PDF SEO link farm pattern, with numerous links to PDFs hosted on Shopify. The embedded document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or to disguise malicious content. The primary intent appears to be luring users to malicious sites through a deceptive link farm.

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=blank+dnd+character+sheet+pdf In PDF document text
    • http://files.lightningridgerealestate.com.au/uploads/1/3/0/7/130775154/migirudanozivov.pdfIn PDF document text
    • http://files.choosehealth2016.net/uploads/1/3/0/9/130969811/fitop-safawogunonix-juxokore-kulej.pdfIn PDF document text
    • http://files.kinematicintegration.com/uploads/1/3/1/4/131438835/287e220ad0e61.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/1/0431/6522/1015/files/ritadavisebativ.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/zojenituritarin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/63991413354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/9508096406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/daxotasumunolupebepow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/53255944055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/35574522046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/68624042453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5760/8864/files/gusopoletosegironitikotud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/92073163772.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 5

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_off0000683b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683B 4988 bytes
SHA-256: b39be17f353cc1c0838713ac92287b911a5e240a1785eb9f3f8ef2d404f249c1
font_01_sfnt_off0000791e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791E 10376 bytes
SHA-256: 7c437e51ea4cc5e65a4ccd0f6ad4025ee607d5b326eca3e1771898c0c3ecab9b

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