Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cbcc9374776521f…

MALICIOUS

PDF

74.1 KB Created: 2021-03-12 07:17:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f79804871ce3f4460794856418f561c9 SHA-1: 57e70d4001a00af1f43f522a6f3bf21615278f9b SHA-256: 3cbcc9374776521f52cd54388e4c0c780d519be7acef76ce7ff50dbf99607a2b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains a title suggesting a social engineering lure. No scripts were extracted, but the presence of external URLs and the overall malicious classification strongly indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/strik?utm_term=how+to+ask+your+ex+boyfriend+back+out+over+text PDF link annotation
    • https://cdn.sqhk.co/lijipatalenu/2YMZjiW/waxazoralisitikoniv.pdfIn PDF document text
    • https://cdn.sqhk.co/pebekaja/dFcuFor/86532373727.pdfIn PDF document text
    • https://cdn.sqhk.co/levuzivanu/noidjcx/dapugosavoted.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/dgcJhg5/28008619760.pdfIn PDF document text
    • https://cdn.sqhk.co/zarifabidit/WvGZ8gj/xikanabikerulagipofuto.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/ha0sgHA/55258376714.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/gikgiub/bikeletatuzuteb.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodimina/ehc5T6r/pajibevosidesufezizevibat.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/1hghjKb/zombie_diary_hack_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/ifO6CYF/versatile_role_meaning_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/zezetemirag/D65haHn/22261408187.pdfIn PDF document text
    • https://cdn.sqhk.co/fidisutipamu/E9hbrPI/dezebifisaguzuwegal.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/tonemakopinibem/bipovetaja.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/mokegigerawexolizi.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/brussels_airport_departures_gate_information.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/photoshop_collage_template_20_x_30.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/mofenotujabuxomekivi.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/determinant_of_3x3_matrix_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/17077741103.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/what_type_of_fluid_for_manual_transmission.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/goodreader_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/7302895252.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/backdrop_size_guide.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_off0000e405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE405 5472 bytes
SHA-256: 749c094d825b4b9ae8d31eb5bd8aaad6f22bbed3f4f67362d7f7ba54d84d6e7d
font_01_sfnt_off0000f6cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CD 10460 bytes
SHA-256: 63b54ae03631e4c1b1e769c0bed1b0c85d17ba6170b9881ee65c7580517bd720

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