Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7ce3c0bede0198…

MALICIOUS

PDF

73.8 KB Created: 2021-02-04 14:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 99e941cbe41c1868395c9426ade59ab8 SHA-1: 54fbc92739854c04477c690e1c24d0b4d91d2f75 SHA-256: ea7ce3c0bede0198361f063b5b65487fde52a65c4524bb6818da9f57c37f5983
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as coroner's reports. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/aws?utm_term=coroners+reports+ontario PDF link annotation
    • https://cdn.sqhk.co/rafatuvolix/ibidWja/my_spy_online_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/lomokubaf/UlTzjjH/real_car_parking_2_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/gdb4iiV/54312075850.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/giLdicV/51261348824.pdfIn PDF document text
    • http://tixomuwenape.22web.org/balakrishna_movie_songs_telugu.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/BijM4Ku/66422778038.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/ggQjjUV/ice_princess_run_subway_rush_tickets.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/fhiNiis/whatsapp_qr_code_scanner_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/ijjhigw/netemimalale.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/hcjgpza/geferirutakosag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nabepazefesuju.epizy.com/frieslandcampina_wamco_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/phn_mm_ct_file_trc_tuyn.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/2942156.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/year_3_maths_worksheet_tes.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/does_uv_light_kill_total_coliform_bacteria.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/auto_clean_vs_manual_chimney.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_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 4684 bytes
SHA-256: 7ba6c14db93d51f3bfe54fb9cd68549c52caec38aee68d509d551b8a907e329f
font_01_sfnt_off0000f4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4ED 11660 bytes
SHA-256: 14913c431e54b7e081455d6577db32238e5baabc021f3a3ac14d71293ed37ebd

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