Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c4aa26afeea19b…

MALICIOUS

PDF

59.5 KB Created: 2021-07-03 05:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b1bd779e15cb98a159d8cace2117f59b SHA-1: 96933846a9f0f46362a7034a916b0c5450267814 SHA-256: c8c4aa26afeea19b0a8f3db24d32ddf7a044bea1669e9b22f87467609f75e365
154 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to other PDF files hosted on various domains, many of which appear to be compromised CMS upload directories. This structure is indicative of a link farm designed to distribute malicious content or facilitate phishing attacks. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5356

Heuristics 5

  • 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.
  • 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://alliance-ltd.com/userfiles/5611840574.pdf In PDF document text
    • http://mebco.ru/images/file/norekagakoxozolel.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/79587296300.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870c1674e95---82715829682.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870e9d6dfcb---36734137054.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16099f5c03dcdb---43983089171.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1dc88645fb---86977190170.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f6e1bc485---sunukonakanibapa.pdfIn PDF document text
    • https://studio-september.com/wp-content/plugins/super-forms/uploads/php/files/3a3caef0ca888638d47a810bcbff084c/favoxuxikadusodisiwusef.pdfIn PDF document text
    • http://n2nlah.org/UserFiles/file/gifazaxevarugefiwos.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/kqahddnd2hr665gkh50rbu07d5/4806097558.pdfIn PDF document text
    • http://geodavidepini.it/userfiles/files/21320308647.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842b6a12012---94652125597.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021051312471281.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/7hjs2ih8h3pnjd1q81f5ngn162/badifokaberevukewekopu.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/fpi2m62bo5ig6qffqmjtmhda45/24528695529.pdfIn PDF document text
    • https://beliangka.com/contents//files/nizubofokamodamaf.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/jmq36ghs5dn9u3919ntkiul7lh/5338658624.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/8d714d55a2f68caa71216c5724843489/putapafod.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/9e5cuqhj6js06hocijtjrfhc80/bujodazesadexabezu.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/26959791954.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/43976244516.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/xiwikiweburi.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/8c9580209b51d28b5d57382e95d9778e/81241982194.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=running+a+restaurant+for+dummies+pdf+free+downloadPDF link annotation

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