Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8c163d7fce2b0a…

MALICIOUS

PDF

52.6 KB Created: 2021-06-21 08:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 39200b5ed707269015a6f17c41a26ab6 SHA-1: 0cd9515135bddf76cad16c14b3f645ade92300f7 SHA-256: 3c8c163d7fce2b0a89599be5d038a523ca9665c87dba86a8414df5bd8d603584
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It functions as a link farm, directing users to multiple compromised websites hosted on disposable domains. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather to host links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7184

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://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/8d55deabb90bec8f10f43bedc64cc0ca/17581936831.pdf In PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/238a8e7cc00dc9624203d19608efc644/81682305470.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877bbe33625---fufuzolegodaratinefaw.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/78400520299.pdfIn PDF document text
    • https://energooptima.hu/upload/File/74176640497.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b369482f209---xusilegeboxusewaxetep.pdfIn PDF document text
    • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/h78hal7t8d80nrer64coh40v1u/fafofeniwigekevux.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/lafanitilapotepexezelavod.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/a40797b2b8fa73c1fcc5ceb9df91463c/fufomofewi.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160991548f13be---85185973288.pdfIn PDF document text
    • http://c-amc.com/upload/files/90107258296.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/8oci9pqjbjdple0ndmjglsr74e/13707283643.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/k8mgobuqoaeev65b3oagak00le/madizeveteritaditekokiga.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/e2e21fc6a19a53f94c7b4ca7b42107d2/riwiribebavalewi.pdfIn PDF document text
    • https://ecoretras.com/file/felode.pdfIn PDF document text
    • http://gptools.net/userfiles/file/dibesedisaxozolikan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=mass+effect+andromeda+romance+suviPDF link annotation

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