Malicious PDF — malware analysis report

Static analysis result for SHA-256 f76517d727bf8fa2…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 00:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 713652f3ee80136fe8c1901f6aa084fc SHA-1: c51fee764bc33bc2aa550f32a1df9c12a7577f83 SHA-256: f76517d727bf8fa2d975a3e977e5851f3d33e88df44b9282385cce4203248bf6
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to various other PDF documents, likely for SEO manipulation or to host malicious content. The primary redirector URL is identified as malicious infrastructure. The document body, though heavily obfuscated, contains the primary redirector URL and several Shopify-hosted PDF links, suggesting a phishing or scam attempt.

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=curso+profissional+de+alta+performance In PDF document text
    • http://files.americanawningandsign.com/uploads/1/3/0/9/130969917/fulewaguwun-zijebagig-beraziwu-serekexumufet.pdfIn PDF document text
    • http://files.kristinandrewsyoga.com/uploads/1/3/2/6/132695586/3509892.pdfIn PDF document text
    • http://gutat.pursuitofyourroute.com/uploads/1/3/0/9/130969242/3610343.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/1/0434/3942/3655/files/59726061039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5105/6285/files/kazep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/admission_form_aiou.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2737/9877/files/628911410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6153/3082/files/25913537634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/yerf_dog_go_kart_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9347/3947/files/42762287751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/lavolibuvegenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8165/4687/files/wojijejus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/house_rooms_english_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/45733822027.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 3

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_off00005c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3C 5208 bytes
SHA-256: 651089bcbeb97be1f8dd7288ef95b28b480215db324dd8220949f5dfbce76a82
font_01_sfnt_off00006dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 12000 bytes
SHA-256: 2c56c4fff8e4133ae57ad30117d2a42ba34a4a5632f71c1f115d42840e5093cd

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