Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d0f44c428ab6c9…

MALICIOUS

PDF

79.1 KB Created: 2021-03-06 06:36:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0165deb3c861bb8ad22109be01d8208a SHA-1: 72400a802d43803f40200e76bdd763d4baaec1b4 SHA-256: 52d0f44c428ab6c94495e232e37030cb1e59383613ff78aa3e8449ac457cb0e8
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it uses urgency lures and a remote-support tool pretext to deceive the user. The embedded URL likely leads to the download of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=victory+service+manual+download
    • https://cdn.sqhk.co/javeduner/7jbhwaX/68474615838.pdf
    • https://cdn.sqhk.co/xamitarerivu/gcHs3ge/55688768823.pdf
    • http://korsabarca.com/how_to_bypass_lock_screen_on_ipad_miniuo1vx.pdf
    • http://netolenogafa.getenjoyment.net/34857413912.pdf
    • http://dafagaketa.sportsontheweb.net/how_will_this_scholarship_help_you_achieve_your_goals_essay_examples.pdf
    • https://cdn.sqhk.co/kajipazuto/jqickqB/xezurogezegop.pdf
    • http://organize.shop/shark_navigator_freestyle_upright_stick_cordless_bagless_vacuum_sv110632psm.pdf
    • https://cdn.sqhk.co/tatolodam/ggjgXvU/idealo_flights_cheap_airline_ticket_booking_application.pdf
    • https://cdn.sqhk.co/denirinodo/cDibOjd/hideaway_pizza_moore_delivery.pdf
    • http://lnstagram-verifedbadge.com/218900657ov3sr.pdf
    • https://cdn.sqhk.co/legezuseg/fgeoggV/three_stages_of_strategic_planning_process.pdf
    • https://cdn.sqhk.co/xafiguzi/sdpifgg/49906174995.pdf
    • http://galabogenezoso.getenjoyment.net/68339691207.pdf
    • http://xedeporib.medianewsonline.com/hewlett_packard_1102w_laserjet_wireless_printer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tiduro/daily_mirror_latest_crossword_answers.pdf
    • http://nejarisiwudu.atwebpages.com/spelling_practice_book_grade_5_mcgraw_hill.pdf
    • https://s3.amazonaws.com/bexolamabad/barley_cultivation_in_india.pdf
    • https://s3.amazonaws.com/godewumazek/voriwogumodopulomim.pdf
    • https://s3.amazonaws.com/zabevog/glock_19_gen_5_leather_iwb_holster.pdf
    • https://s3.amazonaws.com/remavuj/59968164487.pdf
    • http://pebomotixot.myartsonline.com/how_many_times_did_odysseus_cheat_on_penelope.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_off0000f7ae.bin
5cf5a0d5b24c42a7a0d89991cafc0b43a5555959f3d6ba80005a8700a0043175		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AE 5304 bytes
font_01_sfnt_off000109bc.bin
0734ca33370d8600c6c5feac259d13de9e0d9f2ac88f9939360275829a85dd30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109BC 10984 bytes

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