Malicious PDF — malware analysis report

Static analysis result for SHA-256 125659692bba62ae…

MALICIOUS

PDF

43.2 KB Created: 2020-08-05 07:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3844f18271828d35dd419c485cbeb940 SHA-1: 70c0457238b55bbfae82ce8356faf14c10826737 SHA-256: 125659692bba62ae2a7f9b1f2c9b61e065b8907a4236332d7f5706123ed9f5e1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, designed to funnel users to potentially harmful content. The document body includes a URL that points to a redirector, likely intended to trick users into downloading further malware or visiting a phishing site. The presence of a 'download button' lure reinforces this malicious intent.

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.com/pify?keyword=cell+biology+pdf+notes In PDF document text
    • http://files.stbasilbasketball.org/uploads/1/3/1/4/131483249/f9327885d.pdfIn PDF document text
    • http://files.racqueteerstennisclub.net/uploads/1/3/1/3/131379057/lifexuzaxe.pdfIn PDF document text
    • http://lowim.instituteforeap.com/uploads/1/3/0/7/130738524/19ea104.pdfIn PDF document text
    • http://files.stalbansdavenport.net/uploads/1/3/0/9/130969424/5f53c833fa.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/1/0432/3799/8754/files/39820772086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/31089183544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/17859139994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijufetibumumupaxewaromuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3656/files/12924343679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/tuwefazerimixapejitaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/62699807902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6499/1649/files/19714842637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/83241357048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8682/2053/files/voxatoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/geankoplis_transport_processes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6925/1487/files/lekakubuzagifajepilokunin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0768/0405/files/zipovizil.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 8

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_off00006b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B62 5048 bytes
SHA-256: 39980195f2db09cb7e1ed287d28028f027844e8d1ce11277c6fc5d8381ed7017
font_01_sfnt_off00007cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAD 10408 bytes
SHA-256: 65590d9259a83cf482ea90df386a2959d9243b73dfc331355cb0d7158946c5aa

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