Malicious PDF — malware analysis report

Static analysis result for SHA-256 d543c6a34ea42245…

MALICIOUS

PDF

77.8 KB Created: 2021-03-13 14:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a7df216f7a2a3e72c7f1526ef8ab847 SHA-1: e8feb7ac3ca8f6d3a5d9ffc1f14cf03e8f8228ec SHA-256: d543c6a34ea4224524dd84adfc49a1082e2e230b4bc94dfa181c9651c6653b24
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to 'bologen.ru', which is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of a PDF URI heuristic suggests the document's content is designed to trick the user into visiting a malicious URL, likely for phishing or malware distribution.

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/award?keyword=google+pdf+to+ms+word+converter
    • http://palitra-cveta.ru/multiplication_worksheets_for_grade_2_with_picturesin456.pdf
    • http://info-pages.ru/3760908159342uqv.pdf
    • http://fuwiduwoxobol.mygamesonline.org/13392646385.pdf
    • https://cdn-cms.f-static.net/uploads/4479933/normal_6013c5d7544ed.pdf
    • http://cucoupon.info/excel_formula_if_then_change_font_color4jtlu.pdf
    • https://static.s123-cdn-static.com/uploads/4460944/normal_5fee531329d4f.pdf
    • http://br1.red/list_of_nintendo_switch_games_by_datetdmm6.pdf
    • http://lebojabufi.medianewsonline.com/descriptive_analysis_meaning.pdf
    • http://reduslimitaly-official.site/free_water_parks_near_me_nowb9vh5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tesodagiwor/23056422632.pdf
    • https://s3.amazonaws.com/bifadiwuwileji/scatter_graph_worksheets.pdf
    • https://s3.amazonaws.com/xuvamuba/6782973794.pdf
    • https://s3.amazonaws.com/daxemo/70902952752.pdf
    • https://s3.amazonaws.com/vefagotoje/28468590491.pdf
    • https://uploads.strikinglycdn.com/files/d7fcbcae-8320-4353-bb0a-2c87b48d614a/harrison_bergeron_kurt_vonnegut_jr_summary.pdf
    • https://s3.amazonaws.com/jojitagifuva/bivamokifatoriraturox.pdf
    • https://uploads.strikinglycdn.com/files/8275da6c-02b0-4965-8b08-c38895dfa898/convert_word_doc_to_paint.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e44b.bin
6dd7ff015cc2aba1325e446f9b017fe0bbd120c3d68ced244afd567c28ee7e12
pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 5188 bytes
font_01_sfnt_off0000f5fe.bin
da4ad285e6e4b545112dda2c5f487101404118171bca69c82c5001cf03908e84
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FE 11052 bytes
font_02_sfnt_off00011bcb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCB 4324 bytes