Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e9ad7559e374a4…

MALICIOUS

PDF

102.0 KB Created: 2021-03-23 15:13:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: bd925284a3858633c52462c0d5fb2b74 SHA-1: 438f7ce296802d58f2bf1df4557a4d4e37564995 SHA-256: 24e9ad7559e374a4713f421bfe38b7abd59f83cc5abbf81ffc6fb5c4db0bc671
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The embedded URL likely leads to a phishing page, attempting to trick the user into providing sensitive information.

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://jacksth.ru/strik?utm_term=stairway+to+heaven+lyrics+meaning+genius PDF link annotation
    • https://cdn.sqhk.co/gaxozamikoge/ggDgcgd/appointment_letter_sample_for_teacher.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/jihjgSD/78035670502.pdfIn PDF document text
    • https://cdn.sqhk.co/xevaxerit/BI1ibji/jump_time_tap_bounce_arcade_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485693/normal_5ff207298318e.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/gijiMgh/rebomijixup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497685/normal_6028a84fe6127.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/je2Rgim/xisapunupenow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_6039441704dac.pdfIn PDF document text
    • https://cdn.sqhk.co/xugufufifo/jgshcid/gimijebukidesapite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476122/normal_5ff248362d6f3.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/invghij/24057352019.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/gRibhhn/destiny_child_mobile_game_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/dubagelojuwe/hJjdRja/dozubovo.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/rokuwapesu/deeplabcut_video_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/braun_series_9_9095cc_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59d9132-027e-4891-a7e3-bf8ffba864ef/on_the_origin_of_species_by_means_of_natural_selection_1859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b282ea64-73fa-4e23-9935-eb0bdeb1ee49/jeverok.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/ertalon_6pla_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/tujini.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/movieswood_malayalam_movies_2015.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_off00014fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FA8 5568 bytes
SHA-256: c1b745462e5d28863ab599c19399ff7d857edeafefe4102c1da10543ad6ced17
font_01_sfnt_off0001628c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1628C 11756 bytes
SHA-256: bb11988f21400c8fe8219aa9f5f3a6e08eb13026bfb51b16d8177167ecdd3289

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