Malicious PDF — malware analysis report

Static analysis result for SHA-256 429a1fba24118cb4…

MALICIOUS

PDF

44.2 KB Created: 2020-07-30 08:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d63f00d3a857061999bcd2664facb118 SHA-1: 55d467f4575094a0fb92c9b5f8fbbf21ea1e8b03 SHA-256: 429a1fba24118cb4f436958e0dc2f351ec30d5cbf6dd66bbc1c8588c3dd377f2
202 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, suggests a 'download link' lure, further supported by a heuristic for a visual download button. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=pdf+books+download+link In PDF document text
    • http://files.lifestarbrokerage.com/uploads/1/3/1/3/131383998/solefexoke.pdfIn PDF document text
    • http://files.phoneduke.com/uploads/1/3/2/6/132681464/5519942.pdfIn PDF document text
    • http://files.rollingsoundsdj.com/uploads/1/3/1/3/131379409/wapar-tofoguvuseme.pdfIn PDF document text
    • http://files.belongingonearth.com/uploads/1/3/1/3/131379732/7091145.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/1/0430/3860/5461/files/fosefagarejum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/7939775856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1393/9101/files/xuxemerapigunolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/zapusekidije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/susagadiresegive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0632/7959/files/23364470425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2578/3190/files/77747800438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/79897383545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/42070317808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6712/9504/files/zugugusakakolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/walesejonalotadozeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/11791271137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/6627019694.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 5

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_off000071cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71CB 4692 bytes
SHA-256: 4c47520c68445469d5ddc2466e91bdb484f22642e212487dfb6bdef2a5e5ce59
font_01_sfnt_off000081cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 9968 bytes
SHA-256: 8d3663425b772d99ea01246e16a4c777f271f48b17b90e15c63991de34a18516

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