Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b686207e29daf4…

MALICIOUS

PDF

78.7 KB Created: 2021-03-08 23:49:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1e2a4acf9a0a86689d07ffcf1666841d SHA-1: 977241aeb47d56e8d4c56650fca1506814c4bf28 SHA-256: 66b686207e29daf486f5e9fcbae282df1cf2571d0fb4dc4b0b721d806f0ad3af
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'nipisod.ru' suggests the document is designed to redirect users to a potentially harmful site. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document may be part of a social engineering tactic to trick users into downloading or opening password-protected archives, often used to conceal malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://nipisod.ru/strik?utm_term=honeywell+focuspro+6000+factory+reset PDF link annotation
    • https://guximegokaxe.weebly.com/uploads/1/3/5/3/135304263/7010689.pdfIn PDF document text
    • http://qwertyujg.xyz/adobe_acrobat_scan_tos4yjx.pdfIn PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/CaehjHv/tissot_prs_200_chronograph_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/xoradofexul/UR0MkdL/air_control_systems_hilton_head.pdfIn PDF document text
    • http://jezuxomedoz.iblogger.org/gangster_full_movie_bangla.pdfIn PDF document text
    • http://uscreditreport.info/c_primer_plus_stephen_prata_downloadj2g39.pdfIn PDF document text
    • https://malilojomatade.weebly.com/uploads/1/3/4/3/134354128/xunojuleduvajoboxep.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/LwI9gfZ/fuvuxobasizibafazip.pdfIn PDF document text
    • http://mail-autoscout24.net/subuxonafoxoxunuseviwi3ahz4.pdfIn PDF document text
    • http://bioforce-co.site/how_to_reset_redhead_safeyu8nq.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijapuk/6idGjib/26087590878.pdfIn PDF document text
    • https://kigivalivago.weebly.com/uploads/1/3/4/3/134337689/5a7f8868b.pdfIn PDF document text
    • http://arfesopt.com/kodazuf54gh5.pdfIn PDF document text
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/5679796.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/sulasatevirexo/tefupajab.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/tds_challan_281_form.pdfIn PDF document text
    • http://dijixalokeditix.epizy.com/14355589683.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/xojafinasogakojox.pdfIn PDF document text
    • http://kobuxotaregudes.rf.gd/bit_mesra_bca_application_form_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/examiners_report_gcse_english.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/dish_network_tv_guide_sacramento.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_off0000f6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A2 5460 bytes
SHA-256: 9aaa002e77a5a492f33f5402e565e61c6b7bda33b9fd2779b838e31bb6602d50
font_01_sfnt_off0001095e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1095E 10456 bytes
SHA-256: 9cd89c8b2c613aed80a72301ecb4fd3f6454e2daf21b5053bb802b9f4057187b

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