Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dae0418249033d6…

MALICIOUS

PDF

86.7 KB Created: 2021-07-01 18:06:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 175bde3536d21703b9dae6fabcad0b00 SHA-1: a220e0412242539711f25829187dbc18b701e997 SHA-256: 2dae0418249033d62590f9ac265d8c0fe606407d2cba8533dd1edf22ed653602
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file functions as a link farm, directing users to numerous external websites. Several of these links point to compromised WordPress upload directories, suggesting an attempt to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://pistant.ru/uplcv?utm_term=silly+animal+videos
    • http://metabolit-plus.ru/files/file/noduvof.pdf
    • http://megalabsrl.it/userfiles/files/29458935361.pdf
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c11f268c688---20832651662.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/v7mraqbhrn9bdh9mvkselujmf5/664346582.pdf
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/fijopinufevizejumodipez.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/a2c1c34f1ab915f015238a8ddd638000/galelukubojanafikave.pdf
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/c82bec162a7a317e395ecc6a908ea8f3/duvovenikazeropiluza.pdf
    • http://patrick-vallot.com/upload/files/weboxe.pdf
    • https://twr1115.net/files/fckeditor/file/34819363708.pdf
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ce4e05d81---16245302229.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16078e47a76472---pixivomasopegubinopi.pdf
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160726b485cc9b---23619453622.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/41ce0fbdfc3256e33ef235c85b8f9445/74155168315.pdf
    • http://kstarsmall.net/userfiles/file///sobipubamiximaze.pdf
    • http://nikacarpet.com/My_Project/Hamishe_bahar/ahar_img/files/15548401302.pdf
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bf12e70608a---sisibutixi.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609402daafdf0---sulagipuzobotobu.pdf
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16078a1a7ec0c3---70413119509.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab2d8eda00c---nopozomopafinogogofuvub.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/97f4168cbcf62b7612a6fe8f3cce6df3/dovuposabike.pdf
    • http://apexibd.com/uploads/fck_uploads/file/9998233678.pdf
    • https://specialbrands.gr/wp-content/plugins/super-forms/uploads/php/files/5a829976d0aab72296b265702abf41ad/17248670625.pdf
    • http://springhs1988.com/clients/a/a7/a70db2535ed58991dd9724faf9b165d0/File/79162942000.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/015839d736926a24981b03c6d08d8a05/52212558880.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebfa.bin
7dcaeef4b5c565671af48de9e01f858a35152fea78c45ff0235317bef6e928ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFA 18176 bytes
font_01_sfnt_off00011c44.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C44 16792 bytes
font_02_sfnt_off0001345b.bin
7d239dcfb8f2878ca93ad50a63c701fcda5e0e516a81d54983c9db8bec016906
pdf-font-stream PDF embedded font (sfnt) at offset 0x1345B 10468 bytes