Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd73f984f607dbfb…

MALICIOUS

PDF

34.9 KB Created: 2020-08-02 05:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 286876cc69f33ad837db2a465d395d50 SHA-1: 51007eafd28dc590b3e2778732da9b1b3b880a43 SHA-256: dd73f984f607dbfb4109914e7c61972dd110190bef77a654cf179eee9d6e3869
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. The primary malicious URL identified is ttraff.com, which is known to be used for obfuscating malicious destinations. The document body contains this URL and other embedded links, supporting the attack pattern of a malicious link distribution.

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=clicker+keypad+programming In PDF document text
    • http://files.jacketboosters.com/uploads/1/3/2/6/132681356/2401707.pdfIn PDF document text
    • http://files.thcofe.org/uploads/1/3/1/8/131856757/5215631.pdfIn PDF document text
    • http://files.thechargestation.net/uploads/1/3/2/8/132815019/gejobudopepitorenoko.pdfIn PDF document text
    • http://files.joeybelleboutique.com/uploads/1/3/2/6/132682802/reraxidopanare.pdfIn PDF document text
    • http://files.kaplan.scot/uploads/1/3/0/7/130739986/272799.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/1/0435/7573/8527/files/disogezobagavaselunamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/multivariable_calculus_2nd_edition_briggs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/vuvedamefujerizapidemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/mtd_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulanevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2657/0664/files/node._js_interview_questions_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/restaurant_marketing_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5005/5318/files/15895792252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/35177927934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7860/3167/files/postgresql_backup_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/zukegobidul.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4860 5284 bytes
SHA-256: 3a9201b50425f054fe7861a58b72549e5e5d8e3b0ec726d15c0ae38dc0f3105f
font_01_sfnt_off00005a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A55 11108 bytes
SHA-256: fa8923af7f43ba3c0595d1c63cfe8fa90978420217964f9ca43f3cff7260c12d

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