Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dad3ca5bf1ca483…

MALICIOUS

PDF

97.1 KB Created: 2021-07-23 07:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: faee456b3f4734a5ca3c49f4ac997257 SHA-1: 23a3524b5f986ff7eb85810ac543db232c4d5613 SHA-256: 2dad3ca5bf1ca48397fe43d99945bc11470fef17a3809627bf247332980a9237
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. It contains a link farm with numerous URLs pointing to compromised WordPress upload directories, suggesting an attempt to distribute malicious content or conduct phishing. The PDF structure and embedded links indicate a lure to external, potentially malicious, websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4108

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://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/12ced0bcdfc7e221b7f40344e41bec9e/22198563313.pdf In PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d70e02c72---tuxodakixu.pdfIn PDF document text
    • http://barnesfamilyconnection.com/clients/f/f3/f37d50667a1bb99e511e26172889fab9/File/11878426954.pdfIn PDF document text
    • http://studiotravenzolo.it/userfiles/files/66603161922.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/bfe65e219fa4bed2bc9272b79dff38c8/11337557230.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/wizovozogezetixanekuxe.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d667f4e4094---17379428842.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/9og4o95f35912qr2990814jsdh/68080150791.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/08f4d654e983cf5f2fd7d893e5f4f081/84589025297.pdfIn PDF document text
    • http://dichvutheapec.com/upload/FCK/file/lawoni.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/76e526f38407f17ba2fe7a504b5de73a/13601067921.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160994c47380f3---turebedewidivonaw.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608198270fd4c---21402042118.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/nenuridekorevita.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/rutaganefigem.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents//files/69728320756.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/an4mh6g2rqagm4oa2nustfge91/63852467191.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609590da26790---zevaxalus.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/jovarom.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/t304loocddock567tp5t9ptgao/gutujogikelav.pdfIn PDF document text
    • http://loadcell.vn/Images_upload/files/62952796217.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/8e228c6a4753677fb7a2da962e8e52a5/mekegi.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/ba0b1d0ecfe06f67475f6ff8fe50131c/kotilowasobozogogupijigub.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1631b127b---tesujetebir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=pharmacology+case+study+examplesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14201 18492 bytes
SHA-256: 6679811397248f3694d9a439befccef296477d5165d1a458919120345d6bb93a