Malicious PDF — malware analysis report

Static analysis result for SHA-256 c978a2a19648711e…

MALICIOUS

PDF

80.0 KB Created: 2021-10-20 01:34:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 50702e3d7c77dbe864aed9024992e10e SHA-1: 20ee734a91999c504f2c3397b429d3ae8c4bf25f SHA-256: c978a2a19648711e0eb5b610c198fea105f550478dce33949dabbb6b554d89e8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, flagged by heuristics as a link farm and a potential phishing lure. ClamAV detection and ML classification strongly indicate malicious intent. The embedded JavaScript likely facilitates the execution of malicious actions or redirects to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://webrobogo.hu/kepek/fesuz.pdf In PDF document text
    • http://www.performhabitat.fr/bundles/astadmin/js/ckfinder/userfiles/files/25357986570.pdfIn PDF document text
    • http://bakoca.hu/files/file/nubagiwefula.pdfIn PDF document text
    • https://f27szerviz.hu/upload/files/lujasakufigukatezumilo.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161537705309a7---jowufezotapamunuvum.pdfIn PDF document text
    • https://silverlabpupsforsale.com/userfiles/files/5594630701.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/20609113a5203f06f45981fec1ea8beb/narutewepewemogalo.pdfIn PDF document text
    • http://studio70.eu/userfiles/files/47949362793.pdfIn PDF document text
    • http://radecznica.pl/userfiles/file/56242192682.pdfIn PDF document text
    • http://haitrungkim.vn/uploads/userfiles/file/ripogonivexo.pdfIn PDF document text
    • http://xn----dtbhwhggdaoqfh3d.xn--p1ai/media/file/famupamekus.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/54472858186.pdfIn PDF document text
    • http://alda.pl/ckfinder/userfiles/files/36410043230.pdfIn PDF document text
    • http://raegcafe.com/uploads/files/sibavotusegalukewetemu.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/39730537541.pdfIn PDF document text
    • http://kme-kme.cz/files/file/bisikerevofadigozipana.pdfIn PDF document text
    • http://www.beautyvogue.ch/Files/file/11623344051.pdfIn PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/88783813550.pdfIn PDF document text
    • http://likuidart.com/files/ckeditor/files/77222200952.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/41527004412.pdfIn PDF document text
    • http://pelejas.com/IMAGENS/CKFINDER/files/18181848383.pdfIn PDF document text
    • https://wilocom.ro/ckfinder/userfiles/files/vowokejef.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/Z3ufxtS7Wvw/uplcv?utm_term=how+to+unblock+my+rushcardPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22E 18276 bytes
SHA-256: e3271ce5fe6e06713ecb499ec9ede6efcb5334070f8e142b8aced246c7eed589
font_01_sfnt_off0001015c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11973 10932 bytes
SHA-256: f2d58d6b5d3b0d32084f10f57bba2f6d788a01e8a5307636fad3c3671851ec74

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