Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca27eb6cff6c8403…

MALICIOUS

PDF

33.0 KB Created: 2020-08-17 05:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c466a0f5d8f8c8ad20efe86e454f263b SHA-1: cc71d0c05a70c3475ea8b9b872190de16a650c5b SHA-256: ca27eb6cff6c84030add254001243fde6dc99eb30b6493744933d5598c58ef35
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to domains associated with link farms and redirectors, indicating a phishing or malicious redirection attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=a+sua+maneira+capital+inicial++krafta. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious content or obfuscation techniques.

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=a+sua+maneira+capital+inicial++krafta In PDF document text
    • http://difazemu.marketable-mama.com/uploads/1/3/0/8/130874285/juxiginamima.pdfIn PDF document text
    • http://files.danibostick.net/uploads/1/3/1/4/131483279/8099587.pdfIn PDF document text
    • http://files.jimmyzhan.ca/uploads/1/3/0/8/130873875/2688864.pdfIn PDF document text
    • http://files.martinenergetics.com/uploads/1/3/2/6/132682897/pufuvufo.pdfIn PDF document text
    • http://files.andthatmeanscomfort.com/uploads/1/3/2/6/132683135/3fc72852e489.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/1/0435/5332/5224/files/easy_to_build_birdhouses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/sibuvajazutupedemufipiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0339/3694/files/a._d._a._m._student_atlas_of_anatomy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/fofulazenitidej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/kisusigubababufoxexor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/libro_el_cerebro_feliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2962/6013/files/61161552020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/76342200245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/vatogilepolesevuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6251/6122/files/vefewunimaxibatufi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000452e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x452E 5212 bytes
SHA-256: a961d796e41527ce73f5f94932caf62bd20494d2b229acc66450bacdd4dd434d
font_01_sfnt_off000056ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56CA 9408 bytes
SHA-256: 90f5e8ba35029a376111ed851892e1ed34cf9347a2a40732010bc2a57edb7746

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