Malicious PDF — malware analysis report

Static analysis result for SHA-256 6079de98a72a18f3…

MALICIOUS

PDF

77.1 KB Created: 2021-02-20 16:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e9859e708667658b858c60c9bfa28da4 SHA-1: 750d3a1d5953b8101de9c38dd41fc12707f36a69 SHA-256: 6079de98a72a18f3f1edb8e152c38bb11cd4ca163a6d4b1c5bebf9cd0be3fe65
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'baarspo.ru', suggesting it's designed to redirect users to a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a deceptive title, likely part of a social engineering lure.

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://baarspo.ru/strik?utm_term=who+is+law+of+fossil+succession PDF link annotation
    • https://cdn.sqhk.co/fipimomozuk/3NgeIMj/world_war_1_history._com.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/igj7bif/spaceship_arcade_games.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/NEIgdmM/single_parenting_tips_for_moms.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/Yjb0igB/mhw_builder_fatalis.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/9gTGX3C/zewinif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_600bf3e243c39.pdfIn PDF document text
    • https://cdn.sqhk.co/wimakebibane/hdhdugd/46236536481.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/7pjgojb/simple_modern_lids_coupon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466666/normal_5ff6b792374da.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/tugumeb/uniforme_da_aeronutica_brasileira_masculino.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/printable_gradebook_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/game_batman_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/93361287469.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/kewesofagitigog.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/2523210300.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/xeromogifodaririti.pdfIn PDF document text
    • http://sidajewaset.epizy.com/bike_ride_songs_in_tamil.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_off0000f1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CC 4976 bytes
SHA-256: c4397da43331ecd59972cd853e63b7c530b3b1710dd3b289fca12b199490cce6
font_01_sfnt_off000102da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DA 10856 bytes
SHA-256: e850a77344ab302a3a06dd1a62e142b898aa805a271bbbd7c58c469b5c230c7c

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