Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d87a314d0b55be…

MALICIOUS

PDF

97.1 KB Created: 2021-09-03 00:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: aa6ac5f7ab303180879eff6e89e1aeb7 SHA-1: 5af2ede96003fd111d0aa46993dc2fa6394f0490 SHA-256: 02d87a314d0b55be3d6851d4a529ea9d46adcd200350691c155db5dfbe080873
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b89494a546c---silidobunizepenometobo.pdf In PDF document text
    • http://afgventuregroup.com/cfiles/file/domoxoferidida.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/gsu4ug61r4g1i6rhcvu9q7aaa6/7204660177.pdfIn PDF document text
    • http://artospace.com/pics/file/razek.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16121c5fd52fc7---dekuxadegitisakod.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97617875de---jivubufisibotajidiganejiz.pdfIn PDF document text
    • http://zabbeleecooking.com/ckfinder/userfiles/files/80680605678.pdfIn PDF document text
    • https://tennis94.fr/img/pics/files/pujarig.pdfIn PDF document text
    • https://cape-electronics.com/media/file/82220751725.pdfIn PDF document text
    • https://jagamimpi.com/contents/files/nozomebisovobarevamejan.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/21110063917.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/fb015b4c972c80efd0e302840698acbd/15332549898.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/67497823860b6ff15061e1.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/ad6hr16ao0gbqssvr08n7reoic/94977255399.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/joluvitin.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160928f95e562f---jufaxutozofewimeminig.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7e4b4f82---41345723815.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/vorirumabegevaw.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/vegenetidasudurulotuxojon.pdfIn PDF document text
    • http://telegid.tv/userfiles/files/mijeferasusufisidetabu.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/7070a4283a2c0a8da0c8dd865f4a0280/zilixixewemapajexebiva.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/60278935839.pdfIn PDF document text
    • http://podhoru.cz/userfiles/file/48815366521.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=valoracion+cefalocaudal+pdf+ejemploPDF 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_off00010f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F55 10712 bytes
SHA-256: 458a73ecd05646b5e851afaa7f5431906cbe683dd520e9c2d18045d648a57a8c
font_01_sfnt_off000127cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FDD 21140 bytes
SHA-256: 3cf4edd87abfa719cf87a67dc1098cb761ef758ea59751fcc77cf4e55f30f94c