Malicious PDF — malware analysis report

Static analysis result for SHA-256 d095edd3dd8c5203…

MALICIOUS

PDF

87.3 KB Created: 2021-08-19 11:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 044f8c5e78611567bb2de1b0314c4b0e SHA-1: 5e80f3862a295b60419211f8e811c2afb61f0f2a SHA-256: d095edd3dd8c5203d2e83400f7663b3f30c0505f8bd6807b77d32ffc711b5bf9
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malicious content or conduct phishing. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a focus on directing users to external, potentially harmful, web resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7829

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16081396f76e05---vukasawifaduwu.pdf In PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/a40175072e20c65cd872150d824bad5f/45454319289.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/dizuriwetisonik.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/21795513388ea5658253dcf81d5fd939/jaserirukibon.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/ht60pv8q28mgn962aob4ojggvj/godebaf.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/97508407886.pdfIn PDF document text
    • https://imagebeaute.fr/userfiles/file/14360118080.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/17018144126.pdfIn PDF document text
    • http://charontrade.hu/data/file/renabija.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/49164655537.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/b6f6649678e1b539fa7eb98080c794a5/kilubiwile.pdfIn PDF document text
    • http://hertzlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/33355697433.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/59125868069.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bec4496089f---xutozoxatotojonasadizado.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/zuzaxixux.pdfIn PDF document text
    • http://bungefamily.com/clients/5233/File/32049261852.pdfIn PDF document text
    • http://beerskiboot.de/img/upload/file/xibofazigunuseb.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/c20e16dc1429a223234288b34d901f23/ramovifel.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/sitasitizerurirofub.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/33086423797.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/tewijaxuwow.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8de092ce6b---8686926811.pdfIn PDF document text
    • http://szkolaprywatnaleszno.pl/userfiles/file/josasinoni.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4cb0c3bf2---39819391014.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/wabolutekuw.pdfIn PDF document text
    • http://neodermclinic.com/file_media/file_image/file/motejesorosalumigafeseg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=business+plan+presentation+ppt+freePDF link annotation
    • 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_off0000fdb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000115c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115C4 16820 bytes
SHA-256: d1241bf40c5c798488e5db1d6f928be9376558510e421b2135599522d77e9a15
font_02_sfnt_off0001417e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1417E 10504 bytes
SHA-256: 6522801a28f59e786d5fa82ec56c2247a6bce8526a219b2e764959d0bfa4e927

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