Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e7d96516bfd39e…

MALICIOUS

PDF

75.7 KB Created: 2021-03-01 04:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: aad9c6574f91bde3775421d27260d1e0 SHA-1: 2009c2d85a23e99f74c8520c5814ed22e88fc4e4 SHA-256: c7e7d96516bfd39efce0a302a1e410ae8d2d1be082fc8580ccf43fa84d6d82f2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. No scripts were extracted, but the presence of an external URI in a malicious PDF strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/strik?utm_term=life+cycle+theory+of+consumption+equation PDF link annotation
    • https://cdn.sqhk.co/pitekofotada/iflDgeE/79869919373.pdfIn PDF document text
    • https://cdn.sqhk.co/pugepavofu/cha3shf/84703974874.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/aihhbgj/84015379198.pdfIn PDF document text
    • http://prod-fruit.space/photonic_crystal_fiber_bookzysiv.pdfIn PDF document text
    • http://iceteas.space/zejukadufuynmrm.pdfIn PDF document text
    • http://xtreme-sport.ru/pakenixabuvjesf.pdfIn PDF document text
    • http://odemebayisitrafik.com/soal_jurnal_penyesuaian_perusahaan_jasa_dan_jawabannyar3em1.pdfIn PDF document text
    • http://rollernefritmassage.xyz/libros_recomendados_para_nios_de_segundo_gradobudt9.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/gapivegek/towunufetalurosazodobe.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/transformation_of_graphs_worksheet_tes.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/2019_free_calendar_template_with_holidays.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/binge_eating_disorder_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/libro_de_baldor_algebra_resuelto.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/how_to_connect_thermostat_to_wifi_honeywell.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/how_to_start_lexus_rx_350_with_key_fob.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/rasunubosogegef.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/84582524123.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/52741241157.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_off0000e832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE832 5424 bytes
SHA-256: 84bac1979512fe5399a630cae71a1b2e684342a6e7aecfe015d3994cfed1830b
font_01_sfnt_off0000fa8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8C 11540 bytes
SHA-256: 8359b8d1f3888c06f80781e2ab0c2d8c8e75dd0e6504041dc86dd61e603f9cf4

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