Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0ebbce8b45aacd…

MALICIOUS

PDF

70.3 KB Created: 2021-09-20 00:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 60c1974f9e50d911a8116e342f8d8456 SHA-1: a835100c4e1434d17bbc95054e749ad7a128d935 SHA-256: 7e0ebbce8b45aacdb16fa52fa24fe40e5a61ef875636d420c7eea27d4b7ea810
132 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4606

Heuristics 6

  • 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.
  • 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.
  • 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://irlanc.ru/uplcv?utm_term=easy+games+apk+download PDF link annotation
    • https://shunnasato.com/sabonidas.pdfIn PDF document text
    • https://lompatjauh.com/contents/files/65313055619.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/koxuzedawuve.pdfIn PDF document text
    • http://thsport.dk/userfiles/file/rorizizasixoguko.pdfIn PDF document text
    • https://am-system.eu/ckfinder/userfiles/files/zezatosizezitaze.pdfIn PDF document text
    • https://klcconsulting.eu/klc/file/sutisiwegibeviv.pdfIn PDF document text
    • http://hidramaco.com/files/files/64305452993.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/33485951202.pdfIn PDF document text
    • http://lucca.jpsoftware.sk/upload/files/51569833743.pdfIn PDF document text
    • http://honmamon-s.com/img_seminar/userfiles/file/turowibejules.pdfIn PDF document text
    • https://atlaskvartir.ua/data/uploads/files/potuw.pdfIn PDF document text
    • https://mar3ol.com/Files/files/disolifarumen.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/xegivizubadek.pdfIn PDF document text
    • http://pitin-akutsu.com/js/upload/files/11065068173.pdfIn PDF document text
    • https://www.vignolaweb.it/ckfinder/userfiles/files/wuzatukudajevonawides.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/ludot.pdfIn PDF document text
    • http://lightofislamonair.org/uploads/files/78866011318.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d511a0a96---jolidatimudomezofukif.pdfIn PDF document text
    • http://ceramkgres.ru/userfiles/file/99388788393.pdfIn PDF document text
    • https://citronel.com/userfiles/files/leligiror.pdfIn PDF document text
    • http://miyisz.com/mingyi/images/userfiles/file/10605990022.pdfIn PDF document text
    • http://tonghuichem.com/upload/files/rubutofaxe.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/m70v37avcp1l52cmurun44am53/zududogimumozelonigu.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/qqskq50nkbpusn7phlsoqbni5o/17831582102.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB13 10720 bytes
SHA-256: 39dfb199f53aeec50542c7a8472613809d1815f3e571ac0af3d3990a7c4e2a6a

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