Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c1f81ad6273f59…

MALICIOUS

PDF

40.6 KB Created: 2021-07-24 02:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: a3726bd01d4292ff73a1a5dfbcd8a433 SHA-1: a074f7ab32b5540f3c90627f376e9f6ec1e036d9 SHA-256: b0c1f81ad6273f59686ee99be6536998e34e2434dbb351cb8f2304d5f0c26fcf
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier. It functions as a phishing lure, presenting an image-based interface that directs users to a compromised WordPress site. The site hosts further malicious PDFs, indicating a multi-stage attack designed to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8966

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://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a19cb49cb43---rorevora.pdf In PDF document text
    • http://gd-weimi.com/upfolder/e/files/20210610213154.pdfIn PDF document text
    • https://clinicamanila.com/ckfinder/userfiles/files/xamibunidon.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7008e5385---31567016101.pdfIn PDF document text
    • https://alpinashop.bg/files/fugigetuxififiba.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/60267848406.pdfIn PDF document text
    • http://jaatkinson.com/userimages/50794527071.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160764f1c68f9c---bijawemo.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609226dea3483---dudezinomugiwi.pdfIn PDF document text
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/a91c807cdda6c4e3a5fc1c7d3b632a7d/28715450813.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160bb008f71519---nurenazifipinili.pdfIn PDF document text
    • http://cutencuddlybreedables.com/_images/file/70213923826.pdfIn PDF document text
    • http://r2doodles.com/clients/4/4a/4a4ed909dcef54c1e3ec6a0ce1d29f2d/File/17030608811.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/4143276b365df5e1364517b65954bf0b/sivazadavejeguweji.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ab62279b68c---kufasodawijapizufawomo.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/8bfa0e1ced4e75e6ab745383c9a2fad9/40825254529.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160e12a1301b10---78606994815.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7319781d0f---kitonutesikedekobozug.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/dikazobasubujevivixari.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/ac2edeb11c0f10f9f526bf951332b087/47274222559.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1609695e8df437---91880506109.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=charlie+puth+cheating+on+you+lyrics+terjemahanPDF link annotation

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