Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a488709bfa13af…

MALICIOUS

PDF

61.6 KB Created: 2021-09-18 23:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 3d9560391165a49d0c6de7a52a78b861 SHA-1: ffc9fcdc94c944ce7faca6e625bb6d021395e4f3 SHA-256: 00a488709bfa13af2dad90f91566dc729152286e4df668fc4822f7c701c53673
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, strongly suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7090

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://laborke.ru/uplcv?utm_term=how+to+hack+snapchat+pictures PDF link annotation
    • http://bodemveenweiden.nl/bodem-veenweiden-img/navoxikujesokexaseguzupe.pdfIn PDF document text
    • http://vit-physio.de/file/72160273208.pdfIn PDF document text
    • http://saatgaamkansarasamaj.com/admin/uploads/files/nibolaju.pdfIn PDF document text
    • https://kingwaterpure.com/ckfinder/userfiles/files/54713048562.pdfIn PDF document text
    • http://standardamulet.com/files/files/9137401724.pdfIn PDF document text
    • https://chowdhurytourism.com/ckfinder/userfiles/files/63474923465.pdfIn PDF document text
    • http://vitalenzyme.com/uploads/fckupload/file/turoti.pdfIn PDF document text
    • http://tuderprogettazione.it/userfiles/files/42509093592.pdfIn PDF document text
    • http://kondicionery-shodnya.ru/upload_picture/file/pedenikamibajilepuda.pdfIn PDF document text
    • http://studioarchoggianiepartners.it/userfiles/files/86856498404.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/rokibidi.pdfIn PDF document text
    • http://merrygoldholidays.com/ckfinder/userfiles/files/12633255198.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614136fdf3f4d---fatumakironupefe.pdfIn PDF document text
    • http://taigesw.com/upload/files/vimamusasivizoxibilikiv.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/161451a168e8b5---62839613623.pdfIn PDF document text
    • http://debnine.net/UserFiles/File/lupoju.pdfIn PDF document text
    • http://muacuoi.vn/Pictures/files/10799112698.pdfIn PDF document text
    • http://delfosventures.eu/userfiles/files/46101775797.pdfIn PDF document text
    • http://reliancefla.com/admin/images/file/zepafudagerutaropijaj.pdfIn PDF document text
    • http://balone.net/_upload/file///84785419722.pdfIn PDF document text
    • http://sake2metustin.com/uploads/files/pifokadujazojefusoz.pdfIn PDF document text
    • https://mcsfood.com/images/file/60556532140.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/8017829297.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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