Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef12b6b0b1768797…

MALICIOUS

PDF

62.5 KB Created: 2021-09-20 18:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: d1ca9464c3e33cecad9a6c52b7594604 SHA-1: d018ec4586b7e5d93537661d1d05724968c858d2 SHA-256: ef12b6b0b1768797d15d4cfdeb3035cd0552c249cfdf5f22b01372be5becda47
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple links pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely to deliver a phishing payload or malware. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://ozkayalartrans.com/userfiles/file/74303373402.pdf In PDF document text
    • https://testpensija.bankai.lv/ckfinder/userfiles/files/xogededeketej.pdfIn PDF document text
    • https://saptabangunmanunggal.com/indomobils/upload/file/tipirakavuris.pdfIn PDF document text
    • http://loca-granderoue-montaletang.com/ckfinder/userfiles/files/widutem.pdfIn PDF document text
    • http://regalmotors-jp.com/js/upload/files/rewifiviwimapoteba.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/damevojiwuzapipulajulumim.pdfIn PDF document text
    • http://podushka.by/files/files/gexasofiwesibipudulikago.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b048f01f4e---sovomimoposomexefakodera.pdfIn PDF document text
    • http://thietbianninh188.com/uploads/files/vidajoz.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141f86b7a3d1---46779385262.pdfIn PDF document text
    • https://datxeninhbinh.com/data/dulieu/files/5409457356.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/2rgdsdrprusntfh529km3dq0v6/zudomajakuxupan.pdfIn PDF document text
    • http://bjsddesign.com/filespath/files/20210906171821.pdfIn PDF document text
    • http://stlukesfp.org/ckfinder/userfiles/files/rimofo.pdfIn PDF document text
    • http://dongkoo.com/uploads/editor/files/vateme.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/5460279949.pdfIn PDF document text
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/46063377447.pdfIn PDF document text
    • http://hytechcommunications.com/userfiles/file/59430373322.pdfIn PDF document text
    • https://ivanamihic.com/files/videwodoputigevebow.pdfIn PDF document text
    • https://ipekyolumedya.com/resim_galeri/file/13924684049.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/tefaxurobo.pdfIn PDF document text
    • https://chingchia.com/uploads/files/202109191027457463.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130ac96c5349---41613495925.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613851a090c02---99962377853.pdfPDF link annotation
    • http://konemara.hu/userfiles/file/vudulefekujajijomi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=como+bajar+videos+con+androidPDF link annotation

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