Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db8eac398a28921…

MALICIOUS

PDF

69.2 KB Created: 2021-09-19 01:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dcf74bec9abe2f9f24a150e9ce3f8882 SHA-1: 7c58ed07b01da7bae41c949010a543a36b30d968 SHA-256: 2db8eac398a289215afb0b9a364d713f954acc5c68080e190e2d8d27267d017d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated maliciousness. It contains numerous embedded URLs, many pointing to compromised WordPress upload directories, suggesting a link farm designed to host or redirect to malicious content. The presence of these compromised links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7082

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://archism.ru/uplcv?utm_term=who+is+stalking+me+on+instagram
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161364bc888fe9---96560300781.pdf
    • https://projektovanje.info/userfiles/file/penuzig.pdf
    • http://dataction.org/demo/dataction/media/95104374370.pdf
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614118f452b08---girifiliperazesifoje.pdf
    • http://bunny888.com/ckfinder/userfiles/files/61997406644.pdf
    • https://itracmediav5.com/ckfinder/userfiles/files/21721961259.pdf
    • http://galaxyjewel.cn/uploadfile/files/89353197914.pdf
    • https://g55net.com/webpagebuilder/ckfinder/userfiles/files/32201072393.pdf
    • http://hzjksj.com/images/upload/File/48174288669.pdf
    • http://sasnowosielski.com/ckfinder/userfiles/files/65252857396.pdf
    • http://nuitsdartistes.eu/images/file/84107350816.pdf
    • http://honeycontacts.com/uploades/userfiles/file/jelere.pdf
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/jovabozovipemijejer.pdf
    • https://www.akilciilacdernegi.com/ckfinder/userfiles/files/wotajuz.pdf
    • http://atreve.eu/ubezpiecz/obrazy/file/97749812634.pdf
    • http://commsoft.nu/demo/ktb/wsmbilder/files/9800789120.pdf
    • http://maquinandoysubastando.com/dleyes/admin/fotos/file/14195327888.pdf
    • http://aviatechinform.ru/sadm_files/56546737409.pdf
    • http://soundspace.eu/Upload/file/7526185719.pdf
    • http://karimeh.com/public/userfiles/file/tegadowimem.pdf
    • http://paddockj.com/user_data/editor/ckfinder/core/connector/php/upload/files/vuraxabofedulesuwidosaz.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140bc0523176---57947370864.pdf
    • http://plymouth-logs.co.uk/ckfinder/userfiles/files/42886337853.pdf
    • http://trubaopt.ru/content/file/92595210165.pdf
    • https://psihodesk.ro/ckfinder/userfiles/files/97570405650.pdf
    • https://brawlcall.jordanadams.com/ckfinder/userfiles/files/ginegakokezamif.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0ee.bin
05a7f56849689baa8786eee6254ed3e095133e3cb82402c0e0eb3cfe96a33da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EE 18120 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.