Malicious PDF — malware analysis report

Static analysis result for SHA-256 25db5d6ca5e8242d…

MALICIOUS

PDF

49.8 KB Created: 2020-08-11 09:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69ab2caa999ea61f9c4532da84a98c1a SHA-1: 4566cb72f308acbd61355a5134333e24788f9e15 SHA-256: 25db5d6ca5e8242dea8933023c638888554b77b56d35f47e6cc29e8908768cd1
194 Risk Score

Malware Insights

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

This PDF document acts as a link farm, directing users to a malicious redirector at 'ttraff.ru' disguised as a user manual search result. The document contains numerous embedded links, many pointing to Shopify domains, but the primary malicious intent is facilitated by the 'ttraff.ru' URL. The PDF structure and embedded links are consistent with SEO poisoning techniques used to distribute malware.

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/wb?keyword=maytag%20gemini%20user%20manual In PDF document text
    • http://files.steveridestheworld.com/uploads/1/3/1/3/131383325/sudexomix-bebozuzujiju-gatawenuj.pdfIn PDF document text
    • http://files.misshaleyart.com/uploads/1/3/2/3/132302859/kibipolafodiri_kidugemojufu_bovibop_tetibojuge.pdfIn PDF document text
    • http://dofoxusav.alecworley.com/uploads/1/3/1/3/131398140/3100225.pdfIn PDF document text
    • http://xapureta.sietinternational.org/uploads/1/3/1/4/131407089/2956461.pdfIn PDF document text
    • http://files.springbrookaerospace.com/uploads/1/3/1/3/131380337/5741275.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/1/0433/7483/7925/files/wabob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26384136461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/lominop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/algorithme_de_tri_et_de_recherche.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/tinufosediluduxajuxij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8262/0834/files/35584999648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/59997903117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/brahmanda_puranam_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/tujovixogukafupero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5489/1161/files/the_x_files_theme_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6345/9496/files/66646251365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/15645937797.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 5112 bytes
SHA-256: 457d19c74f7abae7fb5b108ae64cfad72cd85a82f30460ceca0c284ba9431fb8
font_01_sfnt_off00007e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1E 11504 bytes
SHA-256: 114a1fce03271a8b40f00e8b16170acea32f0a85fbf4bbfd6fe7daa95504d857
font_02_sfnt_off0000a4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F5 16064 bytes
SHA-256: ffad8dbc339acf9f6a7b1c1b901d719cd2bc945b1b13bfb8173beab322595c47