Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d32b9d511d988d7…

MALICIOUS

PDF

46.1 KB Created: 2020-08-09 21:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae04fc7c4350514d21e30b531990e855 SHA-1: b66a252a6d4a2ab999157b66da4200854d1a59e1 SHA-256: 5d32b9d511d988d773cdc08ed5a036724395ffa62322172888960a87c7245dea
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=retiro+de+sonda+vesical+pdf`. The document body, though heavily obfuscated, contains this same URL, suggesting the primary purpose is to redirect users to malicious infrastructure. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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=retiro+de+sonda+vesical+pdf In PDF document text
    • http://bitofoge.estudiosdelaescritura.org/uploads/1/3/1/6/131606060/sibobinatufogadi.pdfIn PDF document text
    • http://files.youngerman-art.com/uploads/1/3/0/7/130776632/foxosebewak-mokisoxu-pumufimumi-mirajomoduni.pdfIn PDF document text
    • http://files.mywmspta.com/uploads/1/3/2/7/132712093/vobam-dufuxedibadoxi-bezimojo.pdfIn PDF document text
    • http://files.texasaikidonetwork.com/uploads/1/3/1/4/131453214/modimupuw-pinusotose.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/9918630837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1760/8090/files/luminarias_led_alumbrado_publico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/bitsat_previous_year_question_paper_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/37083886179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/48186058753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/18463192422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0566/5703/files/govamurifiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/derivatives_calculus_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5271/1581/files/49593465296.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000669f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669F 5004 bytes
SHA-256: 201795ee302df789e5f363c703b2cf25dd6bd77bb2d2bebe092bcfd47770ae4d
font_01_sfnt_off000077bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BF 11084 bytes
SHA-256: 0f38f28e6de51ba3cfdda5a449c021e9ea11e23f55edd78c46f4003d097df63d
font_02_sfnt_off00009c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C0F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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