Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f661f21634e88a…

MALICIOUS

PDF

92.1 KB Created: 2021-03-15 03:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 9045bff71a65257102df1ad804f2601a SHA-1: b0ae2b3eafc211f7bfd4c6dd28796c655b859566 SHA-256: 46f661f21634e88a2bd339b861d7cb5c4a069704758001c532bb776371514ab5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. No scripts were extracted, but the presence of external URIs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pelibifir.ru/123?utm_term=h%25C3%25A4nge+birke+blattform PDF link annotation
    • http://befotuke.mywebcommunity.org/pekikowimanutumetizulek.pdfIn PDF document text
    • http://kogowetek.getenjoyment.net/37715642437.pdfIn PDF document text
    • https://cdn.sqhk.co/litalile/pksCXhe/bemanobofetupavubasawuwi.pdfIn PDF document text
    • http://nukicew.xyz/how_to_program_a_harmony_650_remoteuyqoc.pdfIn PDF document text
    • https://cdn.sqhk.co/bezugisav/hbeTgdv/zunigo.pdfIn PDF document text
    • http://tiktokhd.design/how_to_set_up_hotspot_on_verizon_iphone_xrbm5z8.pdfIn PDF document text
    • http://tonedomopoja.scienceontheweb.net/universal_remote_code_for_toshiba_tv_dvd_vcr_combo.pdfIn PDF document text
    • http://vamoktin.ru/94030014765w9hle.pdfIn PDF document text
    • http://chatik85939775.fun/radawumakewusodpb3a.pdfIn PDF document text
    • http://umniashka.ru/66286213977k9xoj.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/i9hhgIc/balatumijumib.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/sagotomagin/20806716632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54f604fa-b12e-478e-b871-66559f335cc9/benapevabutajikajox.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/kalayil_dhinamum_song_lyrics_masstamilan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac8f7543-a886-43a9-9c06-72ef27aabd46/english_grammar_worksheets_for_class_10_cbse.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/student_absence_form_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a8c49b0-1bdc-4135-9212-30e473bd831c/ridgid_3000_psi_pressure_washer_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/pajuxusazepotirazok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9286057-c788-4ee9-b953-088b0dc2b442/lisijarufefosazulometubaj.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/logo_vector_free_bmw.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/3877087391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e508562e-504f-4688-b80e-c2126d5bd8e5/talobedu.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/coffered_ceiling_beam_width.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/21615730870.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_off00012526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12526 5308 bytes
SHA-256: af6ba9a8a554819edc392ce6cb6a3cd30ea1885d3acc53244dd9085d8f84e063
font_01_sfnt_off00013698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13698 13720 bytes
SHA-256: c2def1dba4fb6436497141b486b70c231009b7dd44d48a0dae02f62e1816c685

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