Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ff9e1e69e5a1ae…

MALICIOUS

PDF

58.9 KB Created: 2020-08-17 12:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34e452dbb27872475f92d63fc4e3e754 SHA-1: c25dd5d41c550a75e0e2dcb632ebf07c182135c4 SHA-256: 36ff9e1e69e5a1aee1a150d3a9a2f1983bb21af46fe0d6b3f58e452d2bc677d6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that points to a malicious redirector. The presence of numerous external links, many pointing to Shopify domains but also including suspicious ones, suggests a link farm or redirection strategy to deliver malicious content. No scripts were extracted from this sample.

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=carson-+dellosa+spanish-+ms%252F+hs+answers In PDF document text
    • http://doxikexu.protectionfenceco.com/uploads/1/3/1/4/131438188/23f0f164a.pdfIn PDF document text
    • http://files.outdoormissadventures.com/uploads/1/3/2/7/132710627/da91e1a3a02d9.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/1/0437/0179/7019/files/64097027716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0160/9366/files/49626958101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/blue_rondo_a_la_turk_dave_brubeck.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/98370227869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5300/7526/files/best_photo_editing_app_for_android_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/tabof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/tipemumiweze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30549310566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/60141898757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/torch_browser_windows_7_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/mupube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9917/5579/files/62652511208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/zatojovilezopusujigobega.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 1

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_off0000a094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA094 5264 bytes
SHA-256: cd152a7c8309f863a869d343fe663592ee45610f9deb35d33aace5ea4882bdb3
font_01_sfnt_off0000b265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB265 14392 bytes
SHA-256: 2d1e1d6a7cad35261e01b2900116bb2c9634c996dd6cc858af74b54f1b8188df

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