Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b244d210163d167…

MALICIOUS

PDF

78.1 KB Created: 2021-02-04 00:52:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2e71d9a77cc269fdea05b703b21314f2 SHA-1: a0ca951a00e831d23dbbfb644cff7a476fa26f5a SHA-256: 1b244d210163d16705a3d7b9303b8c9c0399feb6ee24cc4bff5aaff148bf0623
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'https://bologen.ru/aws?utm_term=ccc+information+services+private+equity', which is likely part of a phishing or social engineering campaign. The document body, though heavily obfuscated, suggests a lure related to 'Ccc information services private equity'.

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://bologen.ru/aws?utm_term=ccc+information+services+private+equity PDF link annotation
    • http://teenagetutor.net/29226631635g4v13.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/jcz5Tgi/91245155971.pdfIn PDF document text
    • http://yildirimotobursa.com/byss_weather_for_wear_os5x1hu.pdfIn PDF document text
    • http://com-signto6.xyz/naxituxdnvan.pdfIn PDF document text
    • http://innov-cis.net/billy_joel_vienna_piano_sheetknag0.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/l7gh9ij/walerisunepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wovitiku/area_triangle_rectangle_parallelogram_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/aplikasi_anonytun_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/sazuxazodadowuzo.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/siridiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/bolsa_de_valores_de_el_salvador_reportos.pdfIn PDF document text
    • http://watenuzigoxabi.rf.gd/pathfinder_andoran.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/discovering_geometry_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/eureka_math_8th_grade_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/41546427172.pdfIn PDF document text
    • http://junulobexatini.rf.gd/43292485183.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE608 5320 bytes
SHA-256: ddb93c4f76e594bd69738e13a209f6f163538b0646df85d3325837f39c480305
font_01_sfnt_off0000f810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF810 10872 bytes
SHA-256: cf58bc797664b7f7b7acced776d6f656b7f11ffbd354d550fb11b7b81bdc634b
font_02_sfnt_off00011d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D4F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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