Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e72af1b4772803…

MALICIOUS

PDF

68.7 KB Created: 2021-09-24 08:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 765afa5bf6b87ca3fc68c518c9f97f24 SHA-1: be1f84fb2327389dca60402603260e76b7e71f1a SHA-256: f0e72af1b4772803413c721f019ebd482acafd0d487be679a00dc85383b03551
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. The PDF contains numerous embedded URLs pointing to disposable hosting, characteristic of a link farm used to obscure the final malicious destination. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6630

Heuristics 4

  • 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
  • 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://garglob.ru/uplcv?utm_term=send+contact+android+to+iphone PDF link annotation
    • https://www.hkha.com.hk/ckfinder/userfiles/files/42495497285.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/p03drjiaa4pnci6ihdef1pn6su/jutinadep.pdfIn PDF document text
    • http://architettotamborra.eu/userfiles/files/83173830506.pdfIn PDF document text
    • https://economiadecomunion.com/ckfinder/userfiles/files/38304502263.pdfIn PDF document text
    • http://davcpundri.com/css/file/55897831565.pdfIn PDF document text
    • http://lev-steklo.ru/userfiles/file/rirajomur.pdfIn PDF document text
    • http://xpeedon.net/userfiles/file/20210910055640.pdfIn PDF document text
    • http://noticiascgnews.com.br/ckfinder/userfiles/files/46730982371.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/36368763178.pdfIn PDF document text
    • http://celcg.pl/uploaded/file/pimabe.pdfIn PDF document text
    • https://skopjemuzikon.pmgrecordings.com/ckfinder/userfiles/files/31078914310.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/kewirelavegosenupakil.pdfIn PDF document text
    • http://qigong.ru/userfiles/file/70651738777.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/jawapariwiwere.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210916_50A08C70AACD3339.pdfIn PDF document text
    • http://www.petersonassoc.com/emailimages/file/xiwenemefikozozu.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/54906892531.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/levisinezuravo.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/manekexi.pdfIn PDF document text
    • http://giaexploring.it/userfiles/files/40407246851.pdfIn PDF document text
    • http://nilesk.com/userfiles/file/vuwowiwuvuwakovewug.pdfIn PDF document text
    • http://webs123.com/userfiles/file/59065232563.pdfIn PDF document text
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/40839803776.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1a6818820---rowasuzesamabituvewu.pdfIn PDF document text
    • https://letstravelforacause.com/miet/assets/files/dinuzokuguzubevor.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_off0000d699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD699 17628 bytes
SHA-256: 956f6273748d4f81a698629c8a5ba9f35a16a473cf390e3614f09994deb8f9f3

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