Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cd17a8be90f9cc…

MALICIOUS

PDF

63.6 KB Created: 2021-10-07 02:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 2dae5e5110cc7286acf116747e9f7d3e SHA-1: b593853e6a061b68f9272ec52e367369b78e0a2d SHA-256: 92cd17a8be90f9cc80df443ba2081d3b1d6b50636a7a4e5b783b1312c11aad7f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external domains, many of which are hosted on disposable or low-reputation domains. Heuristics indicate this PDF is a link farm and has been flagged by ML classifiers and ClamAV as malicious. The presence of external URIs suggests an attempt to redirect the user to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8931

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://drafthe.ru/uplcv?utm_term=raid+shadow+legends+arena+tips PDF link annotation
    • http://receptlap.hu/files/76708712594.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/59960280907.pdfIn PDF document text
    • https://nazrabilisim.com/calisma2/files/uploads/ruzeno.pdfIn PDF document text
    • https://bisleri.genefied.co/ckfinder/userfiles/files/basoxaw.pdfIn PDF document text
    • http://canadianartistic.com/userfiles/file/pivomonarelekumu.pdfIn PDF document text
    • http://thai-apsproducts.com/file_media/file_image/file/9909023969.pdfIn PDF document text
    • http://etalentlink.com/uploadfile/file///2021091317054681.pdfIn PDF document text
    • http://houtackers.nl/userfiles/file/fasavu.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/39729428155.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/gezakugazejosazevet.pdfIn PDF document text
    • http://unstitchedfootwear.net/files/file/jumefugawunav.pdfIn PDF document text
    • https://pannonfinanz.eu/editor_up/78273623167.pdfIn PDF document text
    • https://ruxthai.com/ckfinder/userfiles/files/valerunumizugewa.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615e1327a0893---novafuzajulesamelatexavas.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149cdac7e57e---wamujuxatolijasakorekiz.pdfIn PDF document text
    • http://tokyo-sanritsu.com/userfiles/file/60820896629.pdfIn PDF document text
    • http://to-tuong.com/media/ckfinder/files/93186048517.pdfIn PDF document text
    • http://mobiliteit.nu/files/91088404905.pdfIn PDF document text
    • https://adian.eus/files/galeria/files/25808760160.pdfIn PDF document text
    • http://villahetzwartepaard.nl/survey/userfiles/files/95904647628.pdfIn PDF document text
    • https://happycolaborativo.com/uploads/files/garer.pdfIn PDF document text
    • http://restokrat.info/userfiles/file/91646150072.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-09-21/images/files/kijar.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_off0000e6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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