Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20621e3e30f1efd…

MALICIOUS

PDF

47.1 KB Created: 2020-08-23 04:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32aa4ff94a9fa360f9131699fc94dae7 SHA-1: b0c6133d087a74472f526865a49d8a8d0c364674 SHA-256: a20621e3e30f1efd543b017af9473290085450f3bdcebb2bdc8053fffb9edfa9
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains multiple embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links directs to 'https://ttraff.ru/pify?keyword=catwoman+movie++in+english', which is likely part of a phishing or scam campaign. The document body, though heavily corrupted, contains fragments of the same URL, reinforcing the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=catwoman+movie++in+english In PDF document text
    • http://files.northlightsfauxmagerie.org/uploads/1/3/1/6/131606284/191784.pdfIn PDF document text
    • http://files.kyokushincalgary.ca/uploads/1/3/1/0/131070230/xarugimefuwaripuge.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/1/0464/8914/1416/files/video_lagu_bts_idol_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6746/5890/files/xonokotidagajof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/critical_thinking_worksheets_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8829/8662/files/kipoxapomuwefuzadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2086/9019/files/61220125469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/83501181836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2192/5525/files/desercion_escolar_por_bullying_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7112/7206/files/medudilajovawod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/99754015372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/explain_symmetric_bilinear_forms_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/vuxorurutaruze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/fuvenisizifagiji.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_off000078cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CB 5060 bytes
SHA-256: e13218ffb0e27113eb30569a81a9b6812c3b3aaf47ef22a546f8d5105f7737b5
font_01_sfnt_off000089f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F5 11080 bytes
SHA-256: 1acce31d1908f4b4033df6c9cfca1a9856b6472d20fc96820b6341f6564bd83d

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