Malicious PDF — malware analysis report

Static analysis result for SHA-256 6023c1d2f3a218a2…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 07:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c7af9ecadff58f53c1b56d1bb83178d SHA-1: 872edc69b111dd5011958cc1931fba8197193916 SHA-256: 6023c1d2f3a218a2263a1ae48ee7d7d1c6a2a458a3b8b1085ed9f2a65b627267
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. This redirector, 'https://ttraff.ru/pify?keyword=bayesian+data+analysis+3+pdf', is designed to lure users into downloading further content, likely malicious. The presence of numerous links to Shopify domains, some benign and some unknown, suggests an attempt to create a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=bayesian+data+analysis+3+pdf In PDF document text
    • http://files.chapmanstvservices.com/uploads/1/3/1/6/131606252/7698870.pdfIn PDF document text
    • http://bafaxip.nehassaiu.com/uploads/1/3/0/7/130775971/jefal.pdfIn PDF document text
    • http://koxivuri.majesty-on-cloud9.com/uploads/1/3/1/6/131636612/3422681.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/1/0432/3731/0626/files/duty_of_care_in_tort_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/37773334227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/zikewadozipuniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/about_chandrayaan_2_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/81779807172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/uninstall_xbox_game_bar_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3485/9927/files/21574618848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/dogiwabetejuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0392/6939/files/rabijugejinajobobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/11951123537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/16565329938.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 2

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_off0000649a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649A 5256 bytes
SHA-256: d635a32e45c573230f4e698ad4d7eb3604d6134cfcc585416989d5634cdc2d62
font_01_sfnt_off0000769f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769F 10264 bytes
SHA-256: 8d0007105b1e914c3804cb13354e5b5fae39f90e158632340955735ac41d6ac6

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