Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5583e1adef39fc7…

MALICIOUS

PDF

162.1 KB Created: 2020-08-06 16:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f589092d93c4517457540a7232b7e658 SHA-1: 12698b57b3e9c083c582bf2d436aa7e837bdf9b2 SHA-256: e5583e1adef39fc7ee52e74476876049e13c804425108b491e2feddc1a40c600
134 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for educational content. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, indicating a clear intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=chemistry+form+4+chapter+1+notes+pdf In PDF document text
    • http://rokubi.coachchriscampbell.com/uploads/1/3/0/7/130740316/fumuxi_loweburi.pdfIn PDF document text
    • http://files.dakotayouthandyoungadults.org/uploads/1/3/0/7/130739746/xubogujalu.pdfIn PDF document text
    • http://xilusaf.withvsat.com/uploads/1/3/0/8/130874431/cf7b2b.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/1/0428/4959/9644/files/cancionero_de_zambas_para_guitarra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0858/7936/files/rudram_lyrics_in_tamil_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7112/7208/files/fenasesikabemudexebesoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3413/files/american_redcross_lifeguard_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/garment_costing_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/javefoxipoxogozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/94241789065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/bozakulavepefofiziwusale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2015/5037/files/59945101056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3598/9915/files/icy_veins_mistweaver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/walter_benjamin_livros.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 4

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_off00022025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22025 5508 bytes
SHA-256: 2687b1f123f00b7770f8ba86789465fd5e6aef491135936df208c843f0340d07
font_01_sfnt_off000232c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x232C9 15876 bytes
SHA-256: 302d94e0d49fa37f33087dc097ab6af72860dd1c04308b456d0e722b05f47457
font_02_sfnt_off000263e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x263E5 16248 bytes
SHA-256: dd242dd915c41c1646980f2f3765998e628b681e8637ee3cf12095c063fd5553

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