Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0166bc658bd851…

MALICIOUS

PDF

65.6 KB Created: 2020-08-04 05:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a2d699ebbb076a6c15e2285f0e4cfef SHA-1: 5c4c5d2001591d9f293a1b2b422c2706cab2f219 SHA-256: ff0166bc658bd8510118a20f0ef8af9a4c24532a89ca3db94fff225cda6e8518
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a certificate of conformity. This suggests a phishing or redirection attack. The document body is heavily obfuscated but contains the malicious URL. Numerous other links to Shopify domains were also present, likely part of a link farm to improve SEO for the malicious redirector.

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.com/pify?keyword=ce+certificate+of+conformity+pdf In PDF document text
    • http://jusivafem.dressage.us/uploads/1/3/1/8/131856584/butizofurisidulowomu.pdfIn PDF document text
    • http://files.icellw.com/uploads/1/3/2/7/132712306/18869.pdfIn PDF document text
    • http://files.dobetterwhatyoudobest.com/uploads/1/3/0/9/130969999/405647.pdfIn PDF document text
    • http://files.ptmwc.net/uploads/1/3/0/7/130776852/4801802.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/xobajufinufifovipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/brief_cognitive_rating_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/76771148775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/bufebakatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/girepazirikij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1549/6092/files/archimate_3._0_poster.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/45571259290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/12031126370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7053/5318/files/brother_mfc-_l2700dw_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/96626852656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/temebesatadoju.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 7

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_off0000b6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6AF 5004 bytes
SHA-256: 2fc4b53f0bd74c8f69c8d6c914e8a5ce566fe98f385d79b03acb258a13a90bfe
font_01_sfnt_off0000c79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC79E 10420 bytes
SHA-256: 25fe6501e9c3bf94c3bb5650ac89d583dea4e68c73b987f5e38806ae2359d456
font_02_sfnt_off0000eb61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB61 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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