Malicious PDF — malware analysis report

Static analysis result for SHA-256 af438aafaf6d4813…

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 23:29:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 141827ebce3c74ba866efe821bb9ec07 SHA-1: 91a622485d97c0962dd0553cb95d25ed31fa38a9 SHA-256: af438aafaf6d4813a898d71d1b7d83bad419099d8d1bf66677e1f9874704dd13
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a link farm pointing to malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=deep+drawing+in+sheet+metal, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to external malicious sites.

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=deep+drawing+in+sheet+metal In PDF document text
    • http://files.koreaminifigs.com/uploads/1/3/0/7/130774990/7299242.pdfIn PDF document text
    • http://files.beautybykayrosh.com/uploads/1/3/0/9/130969470/6773535.pdfIn PDF document text
    • http://memodix.crystalclearwindowcleanersuk.co.uk/uploads/1/3/1/4/131407995/xisawalokuti.pdfIn PDF document text
    • http://files.lgbtamish.com/uploads/1/3/1/4/131411688/8479929.pdfIn PDF document text
    • http://files.francoisebabytourguide.com/uploads/1/3/1/4/131406826/4015953.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/1/0433/4410/1544/files/47980738971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/pirag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/java_decompile_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/kundu_medicine_part_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/doodle_god_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/nerulurunamalelafilow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/33442662606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1040/files/gungeon_alien_sidearm.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_off00006228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 5464 bytes
SHA-256: cacd5c80764be8e8cda2914c6698bea2ec777c273798cbe62aa1066e6eeb14a8
font_01_sfnt_off000074a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A9 10292 bytes
SHA-256: 982201055546a0b91499afeb4ad0df74385639076642c9ff2e679fe2e6004226

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