Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bb83eb5c85b866…

MALICIOUS

PDF

88.9 KB Created: 2021-07-15 10:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: deb67b0a17039c4d89a6c402c0563020 SHA-1: 242ab0a6bac497e2b64e66f5631a48e34c42a0c4 SHA-256: 20bb83eb5c85b866395ae6daaf6619340a00f1258c30defcf1c915aa8f577f87
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that are likely part of a phishing or malware distribution scheme, as indicated by the ML classifier and ClamAV detection. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to malicious content. No scripts were extracted from this sample, but the overall structure and heuristic firings point to a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8172

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/AG-UZpNbJGc/square?utm_term=prophecy+for+2021+by+apostle+johnson+suleman PDF link annotation
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60efd420d77757041651cb37/1626330144326/history_of_internet_and_www.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ecd482c38c70342fb01913/1626133635124/bodepimukubaruzikejum.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80b5cefb14d1122134489/1625819996298/warobifapupufezal.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60eca7a558d864752e048e2f/1626122149911/kidney_infection_at_home.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7b81248fdc259403efa71/1625798674712/warm_front_on_weather_map.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_off0000f603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF603 11432 bytes
SHA-256: f115807fc68c37e6e83a4e0ffdd18282be6822941771accd814cc78deffd12ef
font_01_sfnt_off000110c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128D5 17636 bytes
SHA-256: 286cdb8fcca5ab7cb873e641a050935e000eb06f3b890999460dcfd6c4832080

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