Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22b7e33dab2ccad…

MALICIOUS

PDF

80.7 KB Created: 2021-07-14 10:18:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4cf33ec4f0922f8e0214632e06a39ea7 SHA-1: 4c7cfc0674d1b9d30158320c473ba7b5823194f6 SHA-256: e22b7e33dab2ccad7b82f64d45ef29dd8d42fe5716de216bf42109d789e2174b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains embedded URLs, one of which is associated with a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While the document body is heavily obfuscated and unreadable, the presence of these indicators suggests an attempt to trick the user into accessing a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8584

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/eoPDrVzwpx0/square?utm_term=god+created+7+days+pictures
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eca4c9704a383bbedcc4fc/1626121417701/fundamentals_of_analytical_chemistry_7th_edition_free_download.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec9b4c83836e7a7d62deb3/1626118988498/question_tags_speaking_activities.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed8a5250bb312daecf9e2e/1626180178975/damojuzasuzuxererapup.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed9fe5f827c554fd9fef2b/1626185701955/introduction_to_international_commercial_and_european_law.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e95146e51f1f218d6b71d4/1625903430889/62410077308.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec92a2bcf8be39b5068382/1626116770517/first_angle_projection_section_view.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee444627fa864c7d122b84/1626227782435/skyblock_minecraft_mobile.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d999.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 16792 bytes
font_01_sfnt_off0000f1b0.bin
141e13c12fe3892f42f38863854ee945eb3d449ca2768ee1e3d97032b2f902e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B0 10660 bytes
font_02_sfnt_off00010a5d.bin
b0dbf88e8ec9570c060cb664fc19c2c7de21ece0f2cb6844e4717bfe9f331df0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5D 16532 bytes

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