Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b363990adb5df84…

MALICIOUS

PDF

36.0 KB Created: 2020-08-26 02:32:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02098ed1f962ef0be924f321d9b39c9e SHA-1: 2cf8aa7f25da3be736b1b46f3920f778b919a7a7 SHA-256: 2b363990adb5df84bfe9a18dd5d1026cd38ac85f29f32b2f284793efec591b49
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=how+kawaii+are+you'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing the attack pattern. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or content distribution strategy, with at least one other URL flagged as unknown.

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=how+kawaii+are+you In PDF document text
    • http://vijitebi.mysummitagents.com/uploads/1/3/0/9/130969060/ee566ad61bb0060.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/1/0430/3139/6501/files/td_corrig_d_atomistique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0261/1100/files/fewojuworaxilapedujapapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/34614708717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/2159915037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/cch_ct_file_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7883/4586/files/barovenifutinagetar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0766/1464/files/variable_independiente_y_dependiente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/discrete_math_symbols_cheat_sheet.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00003d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D83 4688 bytes
SHA-256: 8a5f2100424bd36135e3e775347fd0f2f227037b19dd49702a382611a6b0f363
font_01_sfnt_off00004d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D92 9832 bytes
SHA-256: 8e368c02ebd6ba6a034950c21a0b981c5831079e8cd55b945043330e91ad00b5
font_02_sfnt_off00006e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6D 16204 bytes
SHA-256: 0318b400cbd4eb80818b7eb131bcca2e18f343f850c5eb1573e525fea31f4d56

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