Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbce37c5d0c06f01…

MALICIOUS

PDF

46.8 KB Created: 2021-07-04 02:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 150262ce02b6345bae79f311e57602fd SHA-1: adbc4b1963289259c44738b2f4cab3794a345a4a SHA-256: cbce37c5d0c06f01cb6c8a3fa5dfd2f00ba63fd1b8ebfda8bd99ab9485141b33
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised WordPress sites hosting other PDF files. This indicates a link farm designed to redirect users to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8512

Heuristics 5

  • 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.
  • 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://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/47a386deda5b3d969e4e33cfab11016c/6554974106.pdf In PDF document text
    • http://giustizianuova.it/userfiles/file/lobesuw.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/88f832793dee2d7d97b6e4bf9326533a/babawuzavatawi.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160807e600f4b7---fajemetivikubuladezokexok.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f08576e47---japobofoneki.pdfIn PDF document text
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/48269622223.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/r5s4jdspgrgs3cic19p0ob32q3/nufufaxum.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd415e5df1---68351371769.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/5rq9njvt2272d94j3ufcgcc4u8/82933292694.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9552debd4---forebukekuletipaxunebu.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/14020926786.pdfIn PDF document text
    • http://www.agenbenangbandung.net/file/2746808737.pdfIn PDF document text
    • https://viettrungson.com/media//Files/42571539472.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/saxeliralud.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609896e46c45b---begumobasomab.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160e03f4c770c1---vikezi.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/a3617412b4a839a23d2b09561982d72b/97642486007.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/0dea7da89865558c7fc94d225bd466d8/17529828315.pdfIn PDF document text
    • https://aneri12.eu/res/file/bamofi.pdfIn PDF document text
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/9o074jeg6qsoadlnht2o00hlfu/luwomilu.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/942d6ce342578065f5af58a39b34c3f1/fukesesuletud.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/kd77kqg1djsfvn1a92790glike/buganaxiludegelewobitoni.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/96a70b9e2c76cb4e6fd28275bea6aee8/jegax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=midnight+mass+for+christmasPDF link annotation

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