Malicious PDF — malware analysis report

Static analysis result for SHA-256 227c9a03e756272b…

MALICIOUS

PDF

77.1 KB Created: 2021-05-09 03:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cac618ddb3cbe9b2eb04bcf5e9b0193 SHA-1: db7e9f1855225c094d9d73bc8c04b3506eb42cbf SHA-256: 227c9a03e756272b495367b6a51a17cb0954c2c30a46d855d585eadd90309f71
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. It contains an embedded URL pointing to a suspicious domain, likely for phishing purposes. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://dafemum.ru/strik?utm_term=white+rodgers+1f80-361+home+depot
    • https://cdn-cms.f-static.net/uploads/4463809/normal_602446a303fbc.pdf
    • https://cdn-cms.f-static.net/uploads/4481528/normal_601609a9a10a1.pdf
    • https://cdn.sqhk.co/kamozipu/dEttQhg/san_andreas_mod_apk_ios.pdf
    • https://cdn.sqhk.co/rozesivotix/PXjiuie/game_of_thrones_cast_season_3_daario_naharis.pdf
    • https://cdn.sqhk.co/nanagajog/dhgJnih/sports_max_cricket_schedule.pdf
    • https://cdn-cms.f-static.net/uploads/4465707/normal_60355f55264ee.pdf
    • http://atomyimperial.ru/74755903482zrw26.pdf
    • http://samozanyat.info/gta_4_theme_sheet_music2riln.pdf
    • https://cdn.sqhk.co/palubavuz/KfibCia/13076514259.pdf
    • https://cdn-cms.f-static.net/uploads/4489843/normal_60567f5f71f7f.pdf
    • https://cdn-cms.f-static.net/uploads/4387235/normal_6069c2b3cb474.pdf
    • https://cdn.sqhk.co/xibetevoxaj/gfgd4jh/zixuzenibitejiped.pdf
    • https://static.s123-cdn-static.com/uploads/4413000/normal_6003a4e45c59d.pdf
    • https://cdn.sqhk.co/xipepovivik/hiLhgoE/21648066405.pdf
    • http://judifino.iblogger.org/10614000676.pdf
    • http://daravto18.ru/las_formas_elementales_de_la_vida_religiosa_durkheimcmjgr.pdf
    • https://cdn.sqhk.co/kigowabalo/ejbjaKW/youtube_tv_nfl_games_today.pdf
    • https://cdn-cms.f-static.net/uploads/4385021/normal_60199df793a06.pdf
    • http://migazezi.iblogger.org/texesubunikubofev.pdf
    • http://zakoroxani.22web.org/petovat.pdf
    • https://cdn.sqhk.co/baluwofuk/cBxbyjd/97667782116.pdf
    • https://cdn.sqhk.co/rilowikapaz/b88Asjc/spin_tops_mod_apk_download.pdf
    • https://cdn.sqhk.co/bupedamarib/gfL0hiA/62826420821.pdf
    • https://cdn-cms.f-static.net/uploads/4424933/normal_6024ca1beb8f8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zapofekeba.rf.gd/begidiseraropiwo.pdf
    • http://norezodo.rf.gd/20375855205.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f165.bin
7cdd8899887c38637711d4a03353aaa1b07982b8dcfc7eb5194005a795c64ae6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF165 5964 bytes
font_01_sfnt_off000105a3.bin
8196f26edac4e2a9ecc2d84bfbabf13cbeb6ff153db6180857e8c286c15edf4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x105A3 9792 bytes