Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff466dc4681a089…

MALICIOUS

PDF

98.5 KB Created: 2021-04-12 02:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2438ef2fee53525c502a0ab32b2914cf SHA-1: 52747577100b50c265d5c6556ee4f3d7e4d063a1 SHA-256: 3ff466dc4681a089fe11a7f1d2088611bb9f0fcb4f7a0e43f60d446925b95097
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://leonvi.ru/strik?utm_term=how+to+make+money+on+house+flip+game PDF link annotation
    • http://13millions.store/lenovo_t420_plugged_in_not_charging3iqco.pdfIn PDF document text
    • http://felesatediz.medianewsonline.com/hs_mini_maxx_update_2020.pdfIn PDF document text
    • http://jetinaxisodew.mypressonline.com/uk_ambulance_services_emergency_response_driver_s_handbook.pdfIn PDF document text
    • http://berezarivire.iblogger.org/wages_board_ordinance_sri_lanka.pdfIn PDF document text
    • http://vumexovuvelafe.medianewsonline.com/25108268892.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/50106980396.pdfIn PDF document text
    • http://fadulifakibul.medianewsonline.com/vedojoginefex.pdfIn PDF document text
    • http://dobofozepop.mygamesonline.org/kpss_vatandalk_ders_notlar_2020_benim_hocam.pdfIn PDF document text
    • http://mewudaguzexo.sportsontheweb.net/on_the_spiritual_in_art_kandinsky.pdfIn PDF document text
    • http://zumbayuliya.online/91601767168kudfd.pdfIn PDF document text
    • http://characduwe.space/348905328334106f.pdfIn PDF document text
    • http://dexiwakuxabef.medianewsonline.com/543067071.pdfIn PDF document text
    • http://outputqwvk.space/kijoputevasegirarivjafb.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/zupenafud/balloon_film_in_tamil.pdfIn PDF document text
    • http://vibirokudod.myartsonline.com/talupitedit.pdfIn PDF document text
    • http://dalapodomunok.epizy.com/the_fool_on_the_hill_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/pokigukuxovuze.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/2020_toyota_camry_xse_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/sjcam_sj4000_air_review_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/60798106424.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/17620087771.pdfIn PDF document text
    • http://nerezusilanake.atwebpages.com/51206272272.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/eclipse_oxygen_cdt_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/how_to_type_won_in_korean_keyboard.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_off00014216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14216 5436 bytes
SHA-256: 554e505c3b7298e8c9fe0720c9349fed64ed02905109ba71020bf2af0070b937
font_01_sfnt_off00015491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15491 11468 bytes
SHA-256: 04a69d38d49ae4780683db06e6b9255d8ae5ec88e0d822d369b82122d61feb9f

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