Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1abc7f7a97f8152…

MALICIOUS

PDF

82.1 KB Created: 2021-03-31 20:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fd6a85aa8e9c5de797abc61f7613bd9b SHA-1: 585e42a70d0b8ce90c197499f5a5d43af7b21bae SHA-256: a1abc7f7a97f8152ad50bf240922e334ea5eb3726b6e221137f4926cec10a929
96 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. 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 0.9998

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://pelibifir.ru/wix?keyword=cs+go+unblocked+school PDF link annotation
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454982/normal_6031bc9e802a7.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/fhbjeoY/mod_ben_10_heroes.pdfIn PDF document text
    • http://winclean-shop.space/where_is_google_account_password_stored_on_androidg469z.pdfIn PDF document text
    • http://ogranicbio.space/what_is_pid_controller_in_plc8eg31.pdfIn PDF document text
    • http://1xbets-regs.site/26899892668vl3t4.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/hIYDjh1/40538415045.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/eghogjQ/81521582605.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443325/normal_5fd2889acb66b.pdfIn PDF document text
    • http://1xbet-regi.site/washington_state_football_coaches_show3uowp.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/bolovopizonuki/kalafujotajujalutike.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/shimano_ultegra_di2_r8070_11s.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/xodutodemo.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/new_construction_home_final_walk_through_checklist.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/coordinate_plane_pictures_halloween.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/internal_audit_progress_report_to_audit_committee.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_off00010454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10454 5004 bytes
SHA-256: 246d3e28c754285cf42d4c2a33da279aafec1e8be2a9f421e45e85c2a7a79022
font_01_sfnt_off00011555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11555 11420 bytes
SHA-256: 97f1dd44f0d1dfcc3e1898ca9a106b5d77c0711e64408555b3bcc35280c708e2