Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebaa0cd7e8f20ab…

MALICIOUS

PDF

73.5 KB Created: 2021-04-30 11:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 06d60f59fb81f3b8017de124916301f1 SHA-1: 576aa066f170f337ea6ab4d6d752f709d74e9574 SHA-256: 9ebaa0cd7e8f20abd409b2c14a3e3102db8fa7bec15a08e34a396430d3b33ee8
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 0.9999

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://soxebez.ru/strik?utm_term=how+to+do+a+ribbon+for+a+gift PDF link annotation
    • http://doordash.link/file_viewer_plus_activation_key_freeic89b.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/32840370858tiqel.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/911095922667obfa.pdfIn PDF document text
    • http://fruit-ital.space/sarkar_3_full_movie_watch_online_freuu962.pdfIn PDF document text
    • http://wiinorama.space/56040990758s6wqn.pdfIn PDF document text
    • http://starconflict-game.ru/gobuzoj721k0.pdfIn PDF document text
    • http://securityverifiedservices.com/credit_karma_score_different_than_credit_reporto5rti.pdfIn PDF document text
    • http://wonder-ita.space/jatoragarebe0ee.pdfIn PDF document text
    • http://mini-camera-super.club/dream_dictionary_tony_crispegpnc.pdfIn PDF document text
    • http://tur8osale.site/youtube_mp4_dizi_indird4g06.pdfIn PDF document text
    • http://limons.space/95651447967ln1tz.pdfIn PDF document text
    • http://fidesuwuranotif.getenjoyment.net/bhagavad_gita_quotes_telugu.pdfIn PDF document text
    • http://basvuruizleme.online/how_do_you_play_pairs_card_game_speedhftzc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://65d0a56f-4074-4e8f-9acc-29e6f8e8f663.filesusr.com/ugd/37655d_6778564a2a6f4360a1f428c41b97da92.pdf?index=trueIn PDF document text
    • https://f7b0ef4b-317e-4f07-901b-4de91a029b50.filesusr.com/ugd/50f142_4eef50085bb04a5aa1551508936573c2.pdf?index=trueIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_fdb8a557bb1248658e58644ba728c5ce.pdf?index=trueIn PDF document text
    • https://351e5f87-f9e5-4015-92cd-d601692b9ec3.filesusr.com/ugd/a0d0d3_70edaaedc28449ea8c353467b5d2149d.pdf?index=trueIn PDF document text
    • https://f19d2187-ce67-4d04-8798-eef694565169.filesusr.com/ugd/bd4746_135ab6d5f9b649428d7e3ed075bab72a.pdf?index=trueIn 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_off0000e220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE220 5056 bytes
SHA-256: b922fad0b76128ffd193489e58705b8f59533b9b8fdf519361d6d58583aa3df5
font_01_sfnt_off0000f375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF375 10484 bytes
SHA-256: c44a9db1e3096df0850a4f34c99e95e233d7c516492af8b0b214f93166f6585e

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