Malicious PDF — malware analysis report

Static analysis result for SHA-256 15024da509c761a4…

MALICIOUS

PDF

35.9 KB Created: 2020-08-17 03:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c9a6372c2da6741eb1ca6d63c01dd75 SHA-1: db643fe6672f54e417a7936da1b74fdc79e2fcb2 SHA-256: 15024da509c761a4eb84e57aa67defb232e3489136054be3eec225c8f7ac03c0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that appears to be part of a link farm designed to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a phishing or scam attempt. The document body, though heavily obfuscated, contains the primary redirector URL, suggesting the intent is to drive traffic to malicious infrastructure.

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=introduccion+a+la+biotecnologia+vegetal+pdf In PDF document text
    • http://zilugexo.bsmga.com/uploads/1/3/1/3/131379552/178ac0ef447dcb4.pdfIn PDF document text
    • http://files.danielstorage.com/uploads/1/3/0/9/130969190/1243452.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/1/0445/4980/0100/files/joindre_des_en_ligne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/82908663167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/84349370460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/xibuwotifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2579/9067/files/57007775932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/1912/7195/files/proceso_administrativo_de_ventas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/86490146382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/arduino_due_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/saruwozipevokebik.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
🗂 Part of campaign: danielstorage.com 7 samples

Related samples 2

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_off000050b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50B9 5284 bytes
SHA-256: daa371af26a44bd6ba2230c7880ca4e7b1271b503ef4cd829d51df22e356a94f
font_01_sfnt_off000062c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 9468 bytes
SHA-256: a4f8ad228ad1fddd6f897120ea8090b5be47df2ed478d71b110277cbf4597dd4

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