Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e0d1ace84d277d5…

MALICIOUS

PDF

66.5 KB Created: 2021-10-14 01:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 4e4f883d2a41ce1d6074dd84848acc61 SHA-1: d9ec074b1532971cafff493432d72261b19b2b8d SHA-256: 4e0d1ace84d277d57308592fe135f8b09cf09b1b512c0456e0f702744533fdb7
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are used in a link farm configuration, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are typical of phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8078

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 http://pamatudarbai.lt/ckfinder/userfiles/files/suwilixosapen.pdf In PDF document text
    • https://299-45.com/CKEdit/upload/files/80960717257.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/26248058707.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/luwiguwiloso.pdfIn PDF document text
    • http://macautemple.com/userfiles/file/niban.pdfIn PDF document text
    • https://kovrdom.ru/sites/all/sites/default/files/file/janafogama.pdfIn PDF document text
    • http://biondiairsystem.it/userfiles/files/96422014112.pdfIn PDF document text
    • http://noithatdangcap.vn/app/webroot/uploads/files/96805689509.pdfIn PDF document text
    • http://lonerangerfanclub.com/ckfinder/userfiles/files/30170385617.pdfIn PDF document text
    • http://artikos.pl/userfiles/file/gawaxudovedezub.pdfIn PDF document text
    • http://twtime.com/uploads/files/202109210629042063.pdfIn PDF document text
    • https://wonwon.taipei/photo/file/kokugodonikiwexomen.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/ledivutovovida.pdfIn PDF document text
    • http://asv-solnice.cz/_files/file/vujeridewoxelam.pdfIn PDF document text
    • http://zvezda-rostov.ru/ckfinder/userfiles/files/27327174685.pdfIn PDF document text
    • http://zge-led.com/luodan/images/userfiles/file/57522867626.pdfIn PDF document text
    • http://xn--90aoaidn.xn--p1ai/ckfinder/userfiles/files/fikejawagoxiviwa.pdfIn PDF document text
    • http://theshop24.com/userfiles/file/pumozuwimaniv.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/42680447222.pdfIn PDF document text
    • https://bda.ch/ckfinder/userfiles/files/tuwiwavu.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614030fe35f66---vabavudugukudofitezosezi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=liberalisation+in+banking+sectorPDF link annotation
    • 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_off0000d6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1