Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb7c0bf3a03b9fb…

MALICIOUS

PDF

176.3 KB Created: 2021-07-18 17:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 6b1a11057a7e6215807d15a1f244a8f7 SHA-1: c2beb26aa68e4613fcb53a9f565d6f6787671917 SHA-256: 7cb7c0bf3a03b9fb2095750e197e27872bc80a1dba7c73cce69874f8c6af1240
156 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 a link farm pointing to multiple URLs, many of which are hosted on compromised WordPress sites using the Formcraft plugin. This suggests an attempt to lure users to potentially malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608305c0c96a2---mexusota.pdf In PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a18b96737---60521491918.pdfIn PDF document text
    • https://chpcentre.com/files/file/87516872521.pdfIn PDF document text
    • https://profix.fr/ckfinder/userfiles/files/72948034937.pdfIn PDF document text
    • https://veaodaibrahma.com/uploads/image/files/78439700774.pdfIn PDF document text
    • http://agendaalzheimer.org/files/galeria/files/73891064247.pdfIn PDF document text
    • https://perfecthospital.org/FCKeditor/file/jidalebesuvuxuxe.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607faa7504367---30698000826.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d208697ca4c---56072084496.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a95183db271---56795164351.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/8796b9ab120ed201eea93e3c42260bcc/2912919667.pdfIn PDF document text
    • http://kasargod.net/uploads/file/59248493378.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd2a283187e---paxusajarozute.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/94565787318.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e94b3167a2b---46333502710.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b59d5383857---75067142384.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/b3d07273c69036b3cae23861278493fc/tuliduguxugatazok.pdfIn PDF document text
    • https://matras-matrasych96.ru/admin/ckfinder/userfiles/files/famux.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/ririzudalagatuvemoxeku.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16074c5bf7e9b8---wotiwe.pdfIn PDF document text
    • http://eviljoy.com/UserFiles/File/giseravomejenivi.pdfIn PDF document text
    • http://paulbwatkinslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wagigabozifurokedelewolif.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/dfc632e0542feab2fa96d983b72d50b7/99169238783.pdfIn PDF document text
    • https://tadimtursu.com/image/files/rosomutuxog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=samuel+l+jackson+lines+from+pulp+fictionPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24EEF 19256 bytes
SHA-256: 6460be741ba3151d9d98ac49368f77b15038f8d496a18fe1befd94b89861b772
font_01_sfnt_off00027fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27FEF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00029806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29806 11036 bytes
SHA-256: cab43e12fa2d3739a28ab5ed029a529fc3e010d4193f03c7e105e1e1fc98c47a

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