Malicious PDF — malware analysis report

Static analysis result for SHA-256 be74719fc568a19d…

MALICIOUS

PDF

40.8 KB Created: 2021-07-02 17:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f2087fbde89f26f5d4eeb5fd1564cc54 SHA-1: d96121dfdc55d9e0b7f6c0ff9559df28eeacbfd4 SHA-256: be74719fc568a19d134927d514919712d32f58050f37169d915ebd72a39e2bb0
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a single image and minimal text, typical of a screenshot designed to hide a clickable link. The document hosts numerous links pointing to compromised CMS upload directories, suggesting an attempt to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8834

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d70f8c1fb---fulazemodezo.pdf In PDF document text
    • http://www.anjhimayath.com/upload/file/kitogepoxojejalizu.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/69310163095.pdfIn PDF document text
    • http://quaretti.it/userfiles/files/95486519590.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/diwitijofiranurekeb.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/37cdcbcb94ef8bb1d1d80dd46fff220e/73481305974.pdfIn PDF document text
    • https://francoisdaulte.com/ckfinder/userfiles/files/82808073490.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/wujetiroka.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/c4svjs9fqg9eo104t556nbm4r5/67909153923.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba04cc909e2---53764209674.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/3167e27bab31c0c082c5bce50a64b083/tojinog.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094db0a5475b---14566687011.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9aae9cb4c---30840481359.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/vadalonovopa.pdfIn PDF document text
    • http://haiphongcontest.com/images/files/munurirajop.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bb52ad8e5cc---44023698665.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe16233770---53032513263.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ur3aitvuf7i5f807lskpoft2b0/51937697275.pdfIn PDF document text
    • https://energooptima.hu/upload/File/87693516141.pdfIn PDF document text
    • http://sosonomo.com/ckfinder/userfiles/files/82058532550.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/91a534ff06f3bcfdd7ea695f334f03f1/42114292882.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a02f48f3351---wonenobusemarofoxipifanaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=name+of+the+autobiography+of+nelson+mandelaPDF link annotation

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