Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ce21ce0becadf4…

MALICIOUS

PDF

105.5 KB Created: 2021-08-02 08:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7c0e1ee20ef61429d0e4140a1276eb60 SHA-1: bfb5fcb8ac9daf5ce97fdfcecb7047ef887512b4 SHA-256: 92ce21ce0becadf4ff07b92c02fb9835b2763bdf2d39006e9b58214617d100d2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://coretry.ru/uplcv?utm_term=how+to+fill+the+holy+spirit PDF link annotation
    • http://dailyliving.nl/ckfinder/userfiles/files/fetaxekefe.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e4487a61202---43964424607.pdfIn PDF document text
    • http://paklya.su/design/img/upload/file/36869107092.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/82657193515.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/691947a38867ab5613bb54aa808ab14a/62016369303.pdfIn PDF document text
    • http://kaztelcom.kz/ckfinder/userfiles/files/nosiferaxinopokuwepi.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16096a785dcc1e---78770378293.pdfIn PDF document text
    • http://teknis.it/userfiles/files/supabulerigipubimamejolo.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/7stc4lnv68kq7n8sfsdt7sk992/vukof.pdfIn PDF document text
    • https://plasy.com/uploads/file/96872702355.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/zexanilomaripawafuz.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/b93314cab30abb41bee45cf814bfb2a2/60503735556.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/ludoj.pdfIn PDF document text
    • http://tai-yang.tw/taiyang/upload/file/janisulatur.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/mibexusekodekopedafuma.pdfIn PDF document text
    • http://designpavelzapletal.cz/files/file/99513440232.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/xuwanivanadu.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759607ef84b---30764616585.pdfIn PDF document text
    • http://wernersuarez.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xejerulazora.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/83903578579.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087c698538c9---gididurevosubomeneveto.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/5b68b3e53d4719455f76b39eaf6b4c4b/dutuv.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607983e0b2c75---fodejevetesililus.pdfIn PDF document text
    • http://lovelyspa.net/ckfinder/userfiles/files/43690822965.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a22eb5d4a6e---sawabalinupetabigosus.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11767 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7E 10380 bytes
SHA-256: b3f402125387ae32c70a15bc9fbad7bf478df5cd2e2505e2d5ffeb21223e9a0c
font_02_sfnt_off0001471e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1471E 20468 bytes
SHA-256: ef50227521fea47bcea1de1520f4765b04289531b849b2dc086545370c58d485
font_03_sfnt_off000169bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169BD 17272 bytes
SHA-256: 99caaa60b0b0368e4ca5098b5dd6a4d591e107aa6e4b56a9d649bb25af1f1186

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