Malicious PDF — malware analysis report

Static analysis result for SHA-256 779d4a8f938deff4…

MALICIOUS

PDF

72.5 KB Created: 2021-05-15 08:26:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b9e4408de18ea4ad5de77ae0d8655c0c SHA-1: 5eed56524f3dc875a56852e932dd2b9ce0fd54fc SHA-256: 779d4a8f938deff45fe1b51dfbe4b7ebd91f2729159be51e53b7a5cf833e9daa
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious resource.

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://mezovuduw.ru/strik?utm_term=craftsman+pressure+washer+6.75+hp+2550+psi+parts PDF link annotation
    • http://amaryllis.space/timulutexonua7v90.pdfIn PDF document text
    • http://riwaxutitono.iblogger.org/rilodivofisibukegeto.pdfIn PDF document text
    • http://guzojowozufi.22web.org/adiemus_free_sheet_music.pdfIn PDF document text
    • http://pixell.store/live_video_wallpaper_free_downloadnivt2.pdfIn PDF document text
    • http://doxotuzen.iblogger.org/85867271017.pdfIn PDF document text
    • http://usejus.club/belkin_n300_wifi_range_extender_no_lightkwwjb.pdfIn PDF document text
    • http://mukesuzovuvo.22web.org/how_to_write_interval_notation_for_no_solution.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/pugomonapoxuxe/28901926362.pdfIn PDF document text
    • http://xorabaza.rf.gd/kaabil_movie_bolly4u.pdfIn PDF document text
    • http://jogisav.epizy.com/al_quran_ul_kareem.pdfIn PDF document text
    • http://tozepudi.epizy.com/ascii_code_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/24352909333.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/82485413045.pdfIn PDF document text
    • http://volegurez.rf.gd/metabolismo_aerobico_y_anaerobico.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/zetew.pdfIn PDF document text
    • http://fufopabi.rf.gd/gijeradijepaxevukux.pdfIn PDF document text
    • http://kapixij.epizy.com/gate_virtual_calculator_for_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/game_dev_tycoon_ios_guide_2018.pdfIn PDF document text
    • http://surufutikexa.epizy.com/96289516576.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_off0000dd1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1C 5768 bytes
SHA-256: 845e17a72138b771408fe324e6d3d748b2d8de259f8f62b1455a2b7da8c135d2
font_01_sfnt_off0000f0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BE 10512 bytes
SHA-256: e546f828f3511896ebac65fee2c413d9570fabafdcb4072d5ef1013637d849c6

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