Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4fd229d8b07566f…

MALICIOUS

PDF

72.6 KB Created: 2021-02-10 04:16:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a4be337212c3b5d176c36e6795fba669 SHA-1: 8537eb25a428f24d3cb0f842fbd18a44e889a18a SHA-256: e4fd229d8b07566f287a337fec486ffed9c96260126c9db0a2008ddd01bcfa36
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV and an ML classifier as malicious. It contains an embedded URI pointing to 'https://baarspo.ru/123?utm_term=magic+chef+wine+cooler+8+bottle', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, contains text related to a 'Magic chef wine cooler', suggesting a pretext for the malicious link. No scripts were extracted, but the presence of external URIs and the overall malicious classification strongly indicate a phishing or downloader attack.

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://baarspo.ru/123?utm_term=magic+chef+wine+cooler+8+bottle PDF link annotation
    • http://idealica-ufficiale.site/wekelaxuzeduvokal2qn1w.pdfIn PDF document text
    • https://cdn.sqhk.co/gutuxegiwad/dK2ohiQ/33128429642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401994/normal_600b8c2ce4d05.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/9igihdh/t-_mobile_prepaid_recharge_offers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475729/normal_5fe82b0c891aa.pdfIn PDF document text
    • https://cdn.sqhk.co/jomawutid/nichbjd/51842409962.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/dD7YjgQ/mudivubatopuso.pdfIn PDF document text
    • http://c-advance.space/6926872949iiuhv.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/cSojaWK/christmas_hokey_cokey_lyrics.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/boduxatavepe/91704492022.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/cisco_anyconnect_4._7_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/3d_football_games_for_android_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/examiners_report_2018_aqa.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/vcenter_server_6._5_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/photoshop_photo_collage_psd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/god_of_war_ps4_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/dubiwupovosepogorujewula.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/english_orthography_reform.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/bheema_telugu_songs_ringtones_free.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_off0000dd78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD78 5396 bytes
SHA-256: 509117f2183f63e8469794e1d5855111dab606376617081fa30783070ec87723
font_01_sfnt_off0000eff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF2 10880 bytes
SHA-256: ea7beadd89ee32be9eb05b6da18dbb07f705243f9eb1a22db9fb6b08bd71a0eb

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