Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceca2be309e7914b…

MALICIOUS

PDF

76.0 KB Created: 2021-02-23 00:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cfe8b010e5f28073be5ba9f01e9e6663 SHA-1: 9a4174a0ca1582b35646575021a282ad6ee8b665 SHA-256: ceca2be309e7914ba25142f68a60b6817cafd825bfa08bcbf4c847ed3dbb0e87
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/123?utm_term=can+you+flat+tow+a+2019+nissan+pathfinder PDF link annotation
    • http://itasda.online/386420671505quik.pdfIn PDF document text
    • http://usese.xyz/wedding_invitations_design_template_freeu7rei.pdfIn PDF document text
    • http://sellforce.ru/android_9._0_release_date_for_nokiacmgqj.pdfIn PDF document text
    • http://sy0n.icu/viber_for_iphone_85bg8u.pdfIn PDF document text
    • https://cdn.sqhk.co/bimepefav/dqILjjY/standard_horizon_walkie_talkie.pdfIn PDF document text
    • http://varietystore.website/rush_2049_arcade_cheatsioj1x.pdfIn PDF document text
    • http://sdek-24.cc/70804004244vocd0.pdfIn PDF document text
    • http://pipvip.ru/27595839553dp2ui.pdfIn PDF document text
    • http://excschool.ru/88937169401rqcyl.pdfIn PDF document text
    • http://winoraama.fun/define_obsolete_formqsngh.pdfIn PDF document text
    • https://cdn.sqhk.co/kamupudoro/J3yjewe/6127236171.pdfIn PDF document text
    • http://osmosiotzs.fun/how_to_pair_turtle_beach_stealth_600_gen_2_to_pckp2fx.pdfIn PDF document text
    • http://reduslim-ufficiale.website/bassaleg_school_uniform_shopeeasw.pdfIn PDF document text
    • http://iglivesupportteam.com/fadunosajovba43.pdfIn PDF document text
    • http://blockhcain.host/revenge_body_workout_planf34sq.pdfIn PDF document text
    • http://vash-fasad.live/grey_s_anatomy_episode_guide_airb5ovd.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/you_are_my_sunshine_audio_songyef1n.pdfIn PDF document text
    • http://shishkin-seed.xyz/interior_design_case_studyf00wj.pdfIn PDF document text
    • http://bizbize-yeteriz.org/agential_realism6otjd.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/jicFTy7/msx_emulator_android_download_for_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/timadupak/faa6hiq/top_down_zombie_shooter_flash_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mejavifoxeb.rf.gd/59689703687.pdfIn PDF document text
    • http://metukobitoro.rf.gd/sixepiwegiwopikujinim.pdfIn PDF document text
    • http://xoviketi.epizy.com/touch_vpn_for_windows_7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE0 5708 bytes
SHA-256: 357991ec76992c8e12c4cf764c162ce8de417c54aa6d3593f4fecd9a81d36919
font_01_sfnt_off0000ef68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF68 10776 bytes
SHA-256: 2adcad1c9aede8ba01a4c14684a1c711a0d7c9503dfac890baea2746162aaa08
font_02_sfnt_off0001145c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1145C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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