Malicious PDF — malware analysis report

Static analysis result for SHA-256 de689ab688952fda…

MALICIOUS

PDF

287.8 KB Created: 2021-06-11 17:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1578e5d0e0d4c3b1a9ac1481384c379b SHA-1: 2adc33fee9b437a5ba4710e82b7dc29c99dbd6d4 SHA-256: de689ab688952fda4b2935c4f01f6d3ac5e3104cb64f52b4b3bb270b69c7ccf0
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs pointing to compromised WordPress sites, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a URL with a "zombie catcher unlimited money" theme further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9452

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://wastran.ru/uplcv?utm_term=zombie+catcher+unlimited+money PDF link annotation
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35168ac4f7---dujufolokujoxago.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/f2671b922c4a0b1c6c4c6b0f037f0201/71513757971.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d6bcc0b9a---jaxukinuwo.pdfIn PDF document text
    • https://jamurgoreng.net/contents//files/75882817066.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b0ab26110---kixotekibukemimawutes.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/84965742628.pdfIn PDF document text
    • https://artenika.pl/fck/file/kojuwipotosevubibe.pdfIn PDF document text
    • https://asi-filter.pl/files/file/50608051789.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c70e765e81---kuruvidafinuj.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607bcc9e18334---27350203714.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/e6fe23fb6c18c2a6238b82e9930c725e/45753002623.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/5625ab2666df40c7178dd14dfa904aa9/dofijuxegejogixet.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/tbb8v52ckun0ls0hqgevsaru9o/giridoderud.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160795001a9054---pajinufi.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/59307032594.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/f9b420830a9d583efa7e3ddc68bb0e60/51061741580.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/kars57tp1ju0vp5qedokrkufl4/fajirivuxuripo.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160991a60c6eba---wegodanakizaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00046989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46989 5200 bytes
SHA-256: 8d0c528c3247c4a27e4a541e6869fe7705cc5ee18eb8a768b17cb4c0c4b3b676

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