Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae3b71b94772848…

MALICIOUS

PDF

143.7 KB Created: 2021-07-03 00:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e16ddbda924c91193ee53338c44d37d4 SHA-1: 4020e0bf5b59b1fcf1bacabcd7a9f9825de867fd SHA-256: 7ae3b71b9477284897ed8f40d073ad109f0f723d9b17bb8b0dd766dec70fa7c4
124 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV, specifically as 'Pdf.Phishing.Trojan'. Static analysis reveals it functions as a link farm, directing users to multiple compromised WordPress upload directories. These links are likely intended to host further malicious content or phishing pages, aiming to deceive users into downloading additional malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3407

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 https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c66c0270d3f---28052126694.pdf In PDF document text
    • http://bulk-supplies.com/userfiles/file/92217470087.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/3snodegehpb08ib7co79gidsar/sidaxoxiwilusofiwoz.pdfIn PDF document text
    • http://garderoba.sk/images/_file/50282419978.pdfIn PDF document text
    • http://screen.by/images/file/fejotuvuxifusabapiv.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ab52d744c7a---wupumabomagugipujakijix.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d872c11d09a---kasowunujodokedef.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b8b6f24f4---49234814609.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc981677ba---keviwopuzef.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/40028543491.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca93d92b2b---rixoxu.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/87561893187.pdfIn PDF document text
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/23816a64f5a2d618ed0230ba8cda4cfd/rerexezexokofafu.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a26657a571---mepixuzusitekejigudenonig.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/b5aaf0043aef4a371ba36f18364eb8f5/86103632858.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607743894ec3a---finunejivorexaroleliwara.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/iibv8uc88953p78lnpqdb9bfhf/4463015981.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7a65ee855---gimivatuvireluzol.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/6417f2483ffe172f6df13a8249fad809/niruwibakodozisok.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b82a846ef36---40108301377.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-6-1/20210601041527399220.pdfIn PDF document text
    • http://lightningriskassessment.com/ci/userfiles/files/loxomeviwonev.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/59ede81525a3b5540e9bc6c445308b66/vepiditufupo.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160860356b309b---vobijovuveremuwibebog.pdfIn PDF document text
    • http://bensonlandscape.com/editorData/file/332353019.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=embedded+meaning+in+bengaliPDF link annotation

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