Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ed34cc35eb41ed…

MALICIOUS

PDF

81.6 KB Created: 2021-09-23 06:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b268f85db4b5485118dc31d9eb902397 SHA-1: 6d774e4c98a44b273f9752d9d201e24c60b693a1 SHA-256: 01ed34cc35eb41edff694bd6a894f044ec592dd84d14f82edb6215e30c97c427
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs that form a link farm, directing users to potentially malicious or phishing websites. Heuristics indicate these links are hosted on disposable domains and compromised CMS uploads, suggesting a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 https://cructi.ru/uplcv?utm_term=porque+no+puedo+abrir+pdf+en+mi+android PDF link annotation
    • http://chroscina.com/userfiles/file/giguxakaxufedepagi.pdfIn PDF document text
    • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/dutevibotojotefakijimed.pdfIn PDF document text
    • http://cosyromania.com/media/file/givinikuvevewejeza.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/63407310752.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/vuzizaruso.pdfIn PDF document text
    • http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/virikegukafupumimofe.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/9627391493.pdfIn PDF document text
    • https://interstudy.net/userfiles/file/83976892014.pdfIn PDF document text
    • http://telekommarketing.com/firme_data/files/66878195412.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/29f265125850db85a935d06814287efb/zelatabid.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16146143e1b074---kisetojekodeluvomobob.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/rasixomuzowalotizu.pdfIn PDF document text
    • http://architects-desk.com/uploadsfile/xefimururatutexapomegem.pdfIn PDF document text
    • http://hocikto.info/userfiles/file/mijedupogugafag.pdfIn PDF document text
    • http://ibrahimabuomira.com/ckeditor/ckfinder/userfiles/files/38309712231.pdfIn PDF document text
    • https://safrano.pl/userfiles/file/tulawesakoz.pdfIn PDF document text
    • https://footballsod.com/images/ck-uploads/files/vozaviwarekut.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af89f25315---24746310121.pdfIn PDF document text
    • https://fanaf.org/article_ressources/file/xidagemomamiweroz.pdfIn PDF document text
    • https://morethancars.eu/uploads/edytor/file/53357173394.pdfIn PDF document text
    • http://musicfriend.vn/public/default/ckeditor/files/99130117107.pdfIn PDF document text
    • http://boonfagrandhome.com/user_img/files/48282491104.pdfIn PDF document text
    • http://swancentive.com/cote_dor_import/admin/ckfinder/userfiles/files/tijawe.pdfIn PDF document text
    • https://argekaucuk.com/nbg/upload/files/fuzimapexexonezumekejojib.pdfIn PDF document text
    • http://mobilni-kadernictvi.cz/files/file/kafezobojepuluvu.pdfIn PDF document text
    • 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_off0000db67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB67 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37E 10736 bytes
SHA-256: b2870ad74a93a3f6bd0afe9ecb519413bf8d4bd5bda948ba881b0ed9b30d4eae
font_02_sfnt_off00010ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA4 17856 bytes
SHA-256: 2a318d796075c98d243bd739afabc11ba4458904f5a3610da90efb5fb62952bc

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