Malicious PDF — malware analysis report

Static analysis result for SHA-256 acc7f2d1d2a110ef…

MALICIOUS

PDF

60.1 KB Created: 2021-08-04 18:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: dbfcd3b095f97bb774f30135406a22e3 SHA-1: 4183df677eb0f74715f21075574ac5bdeb4e4b8d SHA-256: acc7f2d1d2a110effb32829588386d17c120c02d60f474f5264a7c39c767be28
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV detection. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to distribute further malicious content. The presence of numerous external URIs and the nature of the hosting indicate a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9859

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://pixomot.ru/uplcv?utm_term=huawei+p9+lite+2020+update+android+9+installieren PDF link annotation
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/1h8derej0pg1r32e1b9bh07loi/bowupesuwuw.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/2446aa0c901f6c5230ba5bb2eca67f06/xenefetawovuru.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/45836270595.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801eda13e42---devabivipomi.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610342c2e9082---zanoruzesininisu.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf1a560193---90398774663.pdfIn PDF document text
    • https://edgecs.com/documents/lapitaridagid.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607db60d39a5d---29765837561.pdfIn PDF document text
    • https://tailormade-sales-marketing.com/userfiles/file/89677768503.pdfIn PDF document text
    • https://listapp.in/ci/userfiles/files/84396547414.pdfIn PDF document text
    • https://ccaquebec.com/userupload/files/50968424411.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4c7903120---65331288784.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/1ee59286f4bb32dec961aac8c007f579/36743374792.pdfIn PDF document text
    • http://coaching-scolaire.net/userfiles/file/87053114333.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/putepalanoxavubonumar.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/xeniv.pdfIn PDF document text
    • http://unnatiwelfareorganization.com/ckfinder/userfiles/files/tumezipububu.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819fdec6907---sularodarujik.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6cb839ec4---25719437707.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/17838595877.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b4cb923c2fe---75812556339.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/911098167902c0635e6bba78e9675c7f/87511080490.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC27 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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