Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bd6fe654376161…

MALICIOUS

PDF

84.7 KB Created: 2021-09-20 15:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: bf3e90f715277ee7e104bacd861e08fa SHA-1: 457cc0b2388b48b87eb087df890958859ac0a5d2 SHA-256: 60bd6fe6543761616c95914ceaae8d61b498f99c4ab8f0f85966587df13ec7db
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs pointing to external domains, suggesting a phishing or malware distribution scheme. The PDF structure and embedded content indicate it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://queure.ru/uplcv?utm_term=old+ninja+games+for+android PDF link annotation
    • http://www.oiseaubleu-promo.fr/userfiles/file/tezupidokiruvugiveva.pdfIn PDF document text
    • https://iasvn.org/Images_upload/files/wujavi.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/xatasedutatulu.pdfIn PDF document text
    • https://iwanbim.iwan.co/userfiles/files/fewowojema.pdfIn PDF document text
    • https://shibbirs.com/media/files/lilunonosudefeda.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce4fdb2800---43830763150.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/28027003723.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/jezegafagugalifegozarew.pdfIn PDF document text
    • https://endeligmandag.no/e-brev/data/div/kiwipejisekusebi.pdfIn PDF document text
    • http://ambulatorioveterinariorigolon.eu/userfiles/files/60781997205.pdfIn PDF document text
    • http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/baxalisajojemi.pdfIn PDF document text
    • https://priscar.com/documents/files/xixeritusuko.pdfIn PDF document text
    • http://mawratanews.com/armedia/uploads/files/12827350886.pdfIn PDF document text
    • http://nguyenthaotech.com/upload/files/2820851194.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/26940954057.pdfIn PDF document text
    • https://mbamantra.com/ci/userfiles/files/fetufasanefu.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/23950466217.pdfIn PDF document text
    • http://seattleteriyaki3.com/uploads/files/fimifa.pdfIn PDF document text
    • http://tvsatkrosno.pl/userfiles/file/wokizepufudax.pdfIn PDF document text
    • http://protok.pro/upload/files/28206636138.pdfIn PDF document text
    • http://sisparts.pl/zdjecia/fck/file/vijowi.pdfIn PDF document text
    • http://jamalcar.com/userfiles/file/74425474124.pdfIn PDF document text
    • https://doctornhospital.com/banglanews24/editorsfiles/files/20049742442.pdfIn PDF document text
    • https://radio-clipa.ro/userfiles/file/nejodegosavanifadomago.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE764 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7B 10756 bytes
SHA-256: 943dd6ad231767a756cbaf8dc604df0ca3a796fba614abce3d0d41c4219e4c06
font_02_sfnt_off000117e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E3 17472 bytes
SHA-256: 01185196863db758955e6e17fb1d203a67422a8df0cfd41e214e4d8f5225c5b8

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