Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fcdbfd80d1b413…

MALICIOUS

PDF

78.4 KB Created: 2021-07-22 06:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d4a20c7a62bb6cd9da4edcf4db3e5975 SHA-1: 56e6b65225c23f5016ed8c3107918b061ed3f6e3 SHA-256: c6fcdbfd80d1b413ae1b016ab4800c02afad136ddff6a0e4d379c2bbd528d5b3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL that points to a suspicious domain, identified by both ML classifiers and ClamAV as malicious. The presence of this URL suggests an attempt to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://oniceh.ru/square?utm_term=do+you+say+there+is+or+there+are
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f198d38cd58d2969e5559f/1626446035687/nitilo.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee51d7aa539923b587bb44/1626231255835/xetowimosoruremefiluluma.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e92dba2c5c2f6215c96a29/1625894330124/82531831896.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f4d39e1434f635473577e2/1626657694383/vubaderesova.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8ac68fa178c242f3bc4ee/1625861224834/gajogororufodekegup.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f53d85deec58162045ec5b/1626684805412/33867706200.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7f98b6dedd3ae1684944/1626111896975/lalefofetoxapisozenaxuz.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f6ff6e2251ab000acd1f64/1626799982582/zuxaxuzujuribonuju.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f45e3529712869f071955d/1626627638729/41821447209.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee101cdf3d323292cd10ab/1626214428581/answering_strength_and_weakness_questions_in_interview.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8f5436ee212f66cf6cba/1626115925195/david_by_michelangelo_meaning.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e9056d37cb9044755ee102/1625884013284/broad_differentiation_strategy_examples.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee04dfe11d817478d63cce/1626211551565/migrated_meaning_in_assamese.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f8544515f8971b4a46ed0c/1626887237780/wogivavopaxi.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f77fec7fa2f330f681048a/1626832876394/how_many_months_is_60_years.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f445f7c4d0d61e67418b07/1626621431578/makezipofavisugezijaw.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f1b6b6c700e72b2f45fe26/1626453686361/install_counter_strike.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_off0000d33d.bin
7e132e70a7ed92489e27a8851599a6b96d1ab5cf13956330dc5a4442ae628ba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD33D 16628 bytes
font_01_sfnt_off0000fe16.bin
6a3c9b2f56ad90664880bb8d5618e128721016cf9be9521c7b8ee1a9a27b1c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE16 10268 bytes
font_02_sfnt_off0001156a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1156A 16792 bytes

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