Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2b6fa228bf41bc…

MALICIOUS

PDF

45.0 KB Created: 2020-08-15 01:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 770cf92b4c77d8a2ad4b5fee46aa88d2 SHA-1: f3b4a1cf8f4c289cd7b5811e5ce0e6475a15d77f SHA-256: 7a2b6fa228bf41bc9664272a397fad993bd47770fba89300aefc11bdb05980a4
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a prominent link to 'ttraff.cc' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/wb?keyword=stop%20the%20bleed%20training%20pdf In PDF document text
    • http://wafasavov.yavmagazine.com/uploads/1/3/1/1/131164250/nipoxaropatek.pdfIn PDF document text
    • http://jezidekix.stmaryschurchbrighton.org.uk/uploads/1/3/1/4/131438641/wezaw.pdfIn PDF document text
    • http://fekuf.quantelab.org/uploads/1/3/0/7/130739561/5750438.pdfIn PDF document text
    • http://files.libertymerchandise.org/uploads/1/3/1/4/131453541/04af9172cb18dd.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/1/0429/3050/3843/files/86473864020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/wakowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7339/6133/files/aswath_damodaran_corporate_finance_theory_and_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/7185384328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/foundations_of_college_chemistry_14th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9944/2590/files/lukan_authorship_of_hebrews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4062/1222/files/becky_g_can_t_stop_dancing_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/60568944006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/44395854417.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 8

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_off00006c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7D 5368 bytes
SHA-256: ac54eebffc7301b778aa8581be3791665659594348d5ae020dd10969ae6f7160
font_01_sfnt_off00007ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAD 11496 bytes
SHA-256: 167976018fa526f524e0dfd6fac0c0efd33b8e0212191c2897687b4669ac8760

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