Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe29560026f6d759…

MALICIOUS

PDF

62.3 KB Created: 2021-09-05 02:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 6d800dd602193cb898fecb4904c6afa3 SHA-1: 5ee403cdb802b77cf486737ce2a25eedc5a20ec6 SHA-256: fe29560026f6d759fbee272d3d39c7985c4409f878cdc705c30bb43595e17ffe
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. The PDF also contains numerous external URIs, many of which point to compromised websites or link farms, suggesting an attempt to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6040

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://synerhu.ru/uplcv?utm_term=organic+foods+production+act+of+1990+pdf PDF link annotation
    • http://pcwenhua.com/uploadimg/file/16266719531186823384.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/408sh7rbmuiumk2q6dhl2i64m0/gorolaruvixa.pdfIn PDF document text
    • http://cipetbhopal.com/webimg/files/pidopexesigolofu.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/27564565946.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/fiqkvb5ajgus18ai0tqg584423/41292417472.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160add06bd1385---71580814765.pdfIn PDF document text
    • http://syarmarka.ru/userfiles/files/wexakibufuwode.pdfIn PDF document text
    • http://landmanenterprises.com/clients/6/66/660ad4be7ac834282af30b44844c6003/File/70837439430.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/ruwunovogojuzapud.pdfIn PDF document text
    • http://studiosantomauro.it/userfiles/files/sevowelamug.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-9/20210509131141676353.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/2d7cc27083ba72ed9ace4584004b5da5/75116511439.pdfIn PDF document text
    • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/92025248212.pdfIn PDF document text
    • http://veribase.com/E/file/kizulasudozusofufu.pdfIn PDF document text
    • http://crmrealty360degree.in/userfiles/file/4991142203.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608c65ad1cd73---gapebuvisudizajep.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad6a6e1a6b2---81374407897.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/cc9cd8d71164e3d92e65d87f4ca51c4b/80073563501.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/26775566459.pdfIn PDF document text
    • http://promocode.lu/userfiles/files/63717330259.pdfIn PDF document text
    • http://bindashnews.com/userfiles/file/wafejavuxelomunabig.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/36565111264.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/72061662806.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/boviloxase.pdfIn PDF document text

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