Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bd96f480552400…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 17:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4873a71ed8f66bd3c553dd95d06da28 SHA-1: 3a6654783c65c29396bea3dd78e980fe401f3c9c SHA-256: d3bd96f480552400e91b6c945f6f95c297a52ae56c736cb235626c9a39992ca4
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.com/pify?keyword=tutorial+point+python+pdf+download, which is designed to lure users into downloading content. The document body, though heavily obfuscated, contains references to the same lure and URLs, reinforcing the malicious intent. The ML classifier strongly supports the malicious verdict.

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=tutorial+point+python+pdf+download In PDF document text
    • http://files.dalzellcoaching.com/uploads/1/3/2/6/132695865/tufom.pdfIn PDF document text
    • http://melunenu.brahmansystems.com/uploads/1/3/1/4/131437604/ee9238d28740f.pdfIn PDF document text
    • http://dewadab.tonguetiepractitionerinkent.com/uploads/1/3/1/3/131383657/4010507.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/1/0432/2358/0839/files/jeserefab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0822/files/lisokijakalepalumiximun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/36322168537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/61940827840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2994/4730/files/historias_cortas_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/the_warded_man_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/83091144500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9358/1212/files/26502433015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/vavafudinim.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 2

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_off0000570c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570C 4856 bytes
SHA-256: 89b75bd1179e938d2bd67fac4f179fd679501000bc3e7b5407fcab4d6eab491e
font_01_sfnt_off0000678e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678E 10248 bytes
SHA-256: 089d608f82dc1f37e507fe93dc3bda1cf5ef2876238817cdb94b031dd5ca0570
font_02_sfnt_off00008a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A62 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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