Malicious PDF — malware analysis report

Static analysis result for SHA-256 343ad23235b09857…

MALICIOUS

PDF

40.6 KB Created: 2020-08-16 21:16:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19933b0d1fa5c42e890d500aee74eaee SHA-1: e800dfb835827614d42ecb7e206bfa396d3e7d08 SHA-256: 343ad23235b09857a93af1c33b321109b73989b416222be5515e31ca6ba2fcdc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that appears to be part of a link farm designed to host malicious or deceptive content. The document body, though heavily obfuscated, contains references to the redirector URL and benign-looking PDF filenames, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a deceptive content delivery mechanism.

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.cc/pify?keyword=business+process+management+practical+guidelines In PDF document text
    • http://files.moanxiety.com/uploads/1/3/1/4/131453588/dedonepepedewi_fiwikajozasav_dazodijo_worebogum.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/1/0431/7921/2959/files/google_analytics_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/97794630616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rojifibopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/gizud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/87764716632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0221/4046/files/40371734906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/6771175523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3689/3599/files/kivowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3055/2474/files/tazibogeribitoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/form_5472_instructions.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 6

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_off00006232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 5440 bytes
SHA-256: 189fbe34afbe6dce5bf7a26ee241bf13ed63200fe1f99a714b35fe4e97968812
font_01_sfnt_off00007495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7495 9748 bytes
SHA-256: 566c125e1cdc5b5e7dab7ecbfc61096c022d7d8e5b08e51f167f443ba76d4822

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