Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ad6e4060c6f974…

MALICIOUS

PDF

46.9 KB Created: 2020-08-12 13:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2916f61a80175ed1400cedaa25dda8c3 SHA-1: 35186e621916c630d73e6fae7ebfd72d026e36e1 SHA-256: 67ad6e4060c6f974b304e1280074aac2a7e7e3c114257ebaa0a9c9ed17c0cc51
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) identified as malicious. The document body, though obfuscated, includes the title 'Balaclava pdf pattern' and the same malicious URL, suggesting a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=balaclava+pdf+pattern In PDF document text
    • http://peleto.melindakerst.com/uploads/1/3/0/7/130738731/8600312.pdfIn PDF document text
    • http://lenoxom.welcometoboobeebooisland.com/uploads/1/3/1/3/131398591/5956872.pdfIn PDF document text
    • http://tarugun.pinellasparkcra.com/uploads/1/3/1/6/131636855/4fb19e19133.pdfIn PDF document text
    • http://files.prepsbythebay.com/uploads/1/3/0/9/130969065/7914942.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/1/0430/9359/0167/files/telecharger_le_breviaire_catholique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5114/6649/files/75117161935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/46122479526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16779745642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/blank_bullets_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/maryland_sdat_business_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0536/1821/files/aprilaire_500_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/sonifeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/nimoxunetokavimafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/56017771868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7457/files/opengl_tic_tac_toe.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 1

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_off00007a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2F 5080 bytes
SHA-256: 9db10c0755c7a6f2075944746dbbaa7ba3d4f75599bc5fc8ef4e8775bb5208b2
font_01_sfnt_off00008b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8C 10364 bytes
SHA-256: 42486f105a4e6eb5dd9f0766218e808603ec83a4057dd0705a2f4a2738c6ed67

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