Malicious PDF — malware analysis report

Static analysis result for SHA-256 7edaa54174da658f…

MALICIOUS

PDF

73.5 KB Created: 2021-02-28 06:54:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4a68f57fab855282fd35626b9894a56c SHA-1: 29cfa8b1e02e235b6880b6d6085f1fc82e0665da SHA-256: 7edaa54174da658f34e37d8f49aa76c7eb05c9afb805340b5dec4d0fdf91ee47
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that leads to a phishing page, as indicated by the ML classifier and ClamAV detection. The document body, though heavily obfuscated, suggests a lure related to book club questions. The presence of external URIs and the overall detection by multiple security tools strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://vilenefex.ru/award?keyword=who+moved+my+cheese+book+club+questions PDF link annotation
    • https://cdn.sqhk.co/tuxisilogok/hcjdheO/55396524340.pdfIn PDF document text
    • https://cdn.sqhk.co/supibufuk/SNnmCVR/amazon_prime_music_vs_unlimited_bitrate.pdfIn PDF document text
    • http://naturaitalia.space/xem_bi_c_khanh_thi_hw5soh.pdfIn PDF document text
    • https://xetasigebe.weebly.com/uploads/1/3/4/4/134443645/rasufojanafedelenege.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/jirizemin3jo8j.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/1449217.pdfIn PDF document text
    • http://leftoutclub.com/creative_inspire_t7900dqkpt.pdfIn PDF document text
    • http://idealicaitaly.site/hse_non_conformance_report_samplexkn8y.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/22207222683z4r4u.pdfIn PDF document text
    • http://korecos.ru/mujuwuju3f74t.pdfIn PDF document text
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/netoniboziloma.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/IejbhdJ/doom_slayer_vs_master_chief_spacebattles.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/gdGNibf/wavilamovilokitomidizug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/felomire.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/jifobasogulifakeduragovig.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/airport_extreme_manual_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/forofi.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/lutoxum.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE281 5376 bytes
SHA-256: 215a966a8d115dd647bee6b97ec523e18785e5273e38959f88c44c859e436181
font_01_sfnt_off0000f4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BB 11012 bytes
SHA-256: 7c0561ac7d5962807b50f4056c57599cf88b56a498b36989d59b20492e50cd37

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