Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5ac23d1132422c…

MALICIOUS

PDF

74.2 KB Created: 2021-01-18 18:04:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cc81d0aea6003d732b1691dcad9ab898 SHA-1: 899eb3781403ab5fc03c06c89f3b6054bcf435ab SHA-256: ba5ac23d1132422cb8e444297ca3f0fd9576c94c37b0e1b41d63b751ea57735e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely a phishing or malware distribution lure. Although the document body is heavily obfuscated, the presence of the external URI suggests the primary attack pattern is to redirect the user to a malicious site.

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://maypoin.ru/123?utm_term=average+and+instantaneous+velocity+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f875e771afd5.pdfIn PDF document text
    • https://cdn.sqhk.co/jexozumumanu/0Gfibid/30644453718.pdfIn PDF document text
    • http://reborasiruv.iblogger.org/most_common_idioms_worksheet.pdfIn PDF document text
    • http://zubosoxi.22web.org/deliberate_crossword_puzzle_answer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480889/normal_5fb54e3f985bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f875ede0150a.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/vebisop/solving_inequalities_absolute_value_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/igcse_first_language_english_coursebook_answers.pdfIn PDF document text
    • http://rawuwad.epizy.com/bodonivadusojowes.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/popoxipadasadijubap.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/ipso_facto_clause_reform.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/69849835358.pdfIn PDF document text
    • http://tamazodatitemi.epizy.com/html_code_formatter_atom.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/30222872875.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/define_worksheet_name_vba.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/57637306763.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/91609038811.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/druid_wow_classic_talents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/raresejisulowan.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_off0000e421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE421 5508 bytes
SHA-256: a5a8a1ee0f0b99f9f5b84cde406ca07d652bcddf7a4df9822774806a678cb515
font_01_sfnt_off0000f6f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F5 10488 bytes
SHA-256: aa17ae4c7ac259e69b3b63170a465a51e097a8e01de8d1bccb14ce3d0bbfaea4

Open this report in the interactive analyzer, or submit your own file for analysis.