Malicious PDF — malware analysis report

Static analysis result for SHA-256 08826cc5f1424f25…

MALICIOUS

PDF

78.7 KB Created: 2021-07-13 16:27:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b957a8999e1d869a5cc261c910784295 SHA-1: 5a268aa204e3280eddf865ec6a425e48e02325ba SHA-256: 08826cc5f1424f25413ce767e4ced3a3be6c2f2d21c6f3a9e6f4b14d299ad7d6
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The presence of a PDF_SEO_UTM_REDIRECTOR_LINK heuristic suggests the document is designed to lure users into clicking a link that redirects to a phishing site. No scripts were extracted, but the PDF structure itself is indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8755

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://feedproxy.google.com/~r/sq/ugae/~3/CcIy6vlvkUk/square?utm_term=fastest+way+to+get+flying+in+legion PDF link annotation
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e949bbc4c1a734c5d82a25/1625901499284/best_project_cars_for_beginners.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e7bd617d3b385c94b428f7/1625800033502/weekly_comparison_chart_excel.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8a9173c197e145b25dd91/1625860375720/37767582006.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e90b623b7e7c63344f5633/1625885538491/psychotherapeutic_counselling_meaning.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7d26dafd06e4982ea0d9b/1625805422051/angry_birds_go_download_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eccafacaf21f280d7dbd9b/1626131194988/25320302391.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed931df2de0a6ebf35477a/1626182429866/i_just_panicked.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d27f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD27F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA91 17040 bytes
SHA-256: 05b61ce3de04f8f79ebba5317fbf71786d06f402bc0e363eb36f88639ccf018d
font_02_sfnt_off0001169d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1169D 10464 bytes
SHA-256: 1a6f3c14c837d8f1ebdd64ef52b122b290e1c49eba6ff48ff88ed089a8f2c209

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