Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e06ef6744dacc6…

MALICIOUS

PDF

88.3 KB Created: 2021-03-12 20:10:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c52afe88100a36ea0df339431fc5f58d SHA-1: d6661e22e76a19cbf17e1576e21fd559a44ec1cc SHA-256: 04e06ef6744dacc62033e38a1051bc97f35a6ffea6fb5d91c2bd901d563c0e26
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to a 'quizlet' page, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/aws?utm_term=100+words+every+freshman+should+know+quizlet
    • https://cdn.sqhk.co/jimumakevaji/hdSiexq/background_video_recorder_app_ios.pdf
    • http://vuzuwul.getenjoyment.net/hallelujah_piano_solo_sheet_music.pdf
    • https://cdn.sqhk.co/xenivoronizu/pCjjcjc/rumijidibedegexiwixipusi.pdf
    • https://cdn.sqhk.co/mitejapeki/OwKvhec/asphalt_nitro_8_mod_offline.pdf
    • https://cdn-cms.f-static.net/uploads/4450337/normal_60373a5e44aff.pdf
    • http://giwitap.getenjoyment.net/bartok_mikrokosmos_vol_3.pdf
    • http://zabolojisag.getenjoyment.net/how_to_get_back_to_2d_view_in_autocad.pdf
    • https://cdn-cms.f-static.net/uploads/4367007/normal_601b355c150b3.pdf
    • http://vovavipegum.getenjoyment.net/is_buying_an_elgato_worth_it.pdf
    • https://cdn.sqhk.co/bulenupulabo/jeQgdja/23992280432.pdf
    • http://tigafik.mygamesonline.org/what_is_the_purpose_of_structure_in_writing.pdf
    • http://rafupofamurawaf.mygamesonline.org/fun_time_management_activities_for_high_school_students.pdf
    • https://cdn.sqhk.co/fotenulutis/YjbwaDH/77253233526.pdf
    • https://cdn.sqhk.co/vejuwami/gCgdhig/resource_capacity_planning_excel_template.pdf
    • https://cdn.sqhk.co/fegojujor/geievsm/6201066878.pdf
    • https://cdn.sqhk.co/zuxosutuku/FicidQy/10494701224.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gopuvobapeten.rf.gd/sunetoken.pdf
    • http://vamagirizotaro.rf.gd/absentisme_au_travail.pdf
    • http://rixibedi.onlinewebshop.net/649593450.pdf
    • http://runuwug.myartsonline.com/8963430330.pdf
    • http://vekabun.myartsonline.com/taiwan_tourist_map.pdf
    • http://bemuvubovewe.epizy.com/doman_mahjong_cheat_sheet.pdf
    • http://sukeboragepude.epizy.com/26209510774.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_off00011689.bin
d989f635d1e336e041df675954d17526883d8f641d8bffcb6fe1db73e622edc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x11689 5740 bytes
font_01_sfnt_off00012a11.bin
32aa7ea6b5f669deaa81901e408bb9adb429a1f82fcac284e5b4330ea4c08b68
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A11 12572 bytes