Malicious PDF — malware analysis report

Static analysis result for SHA-256 096ca86d8d23deee…

MALICIOUS

PDF

74.8 KB Created: 2021-09-07 17:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 68ca4c39dfd7fbbedace29e12f13b35c SHA-1: c16281b4127d923c729ebd8b7f6fad7a3c48ef00 SHA-256: 096ca86d8d23deee63bfdfd40336cd998b1376d7a50790a592c2675bd384a5e6
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous embedded URLs pointing to compromised CMS uploads and disposable hosting domains. The primary purpose appears to be directing users to external malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8784

Heuristics 5

  • 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
  • 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://dlmberatung.ch/userfiles/files/pubiji.pdf In PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/283a54342c56e119da9bcf66bc5f5424/61754509376.pdfIn PDF document text
    • https://nhabe.com.vn/ckfinder/userfiles/files/93714339749.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/3dba06eec74f3249115163eed9093ebf/23966922352.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/88669975148.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608925ed22629---rijekakedomukuxozaduja.pdfIn PDF document text
    • http://www.clc-engineering.com/siteuploads/editorimg/file/38835574632.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/tomemi.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/17178115243.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c36b2203c66---figosamepowinepezugude.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9ae20a54d---bonabiwijavesovivetinogef.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3ec0b7039---liduxitukodev.pdfIn PDF document text
    • http://beijinghuojia.cn/userfiles/file/vonuviwekisiguxinoxemoz.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/7e96de19f07873501207d0ccdb4f7759/38979070075.pdfIn PDF document text
    • http://cck-brno.cz/ckfinder/userfiles/files/21955199602.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/331uatuul711575g9dq9q17qg1/26090426819.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/41326939838.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/clf4rlqv18qb832iunhbmp599u/12059194576.pdfIn PDF document text
    • http://harckocsik.hu/userfiles/file/gerezoxevoduxudepu.pdfIn PDF document text
    • https://dongphuchuytai.com/upload/files/26798130907.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=desarrollo+sustentable+y+sostenible+pdfPDF link annotation
    • https://www.unimedbelem.com.br/painel_template/assets/global/plugins/ckfinder/userfilesfiles/vewusikuxegogim.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12C 18464 bytes
SHA-256: 4a266b1706c41cbb064acf6561df6aa90dd4721613b6794449b2f185969097a1
font_01_sfnt_off00011010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11010 10848 bytes
SHA-256: 6cd7cfef8fcb96f18ee495fcd7d8113ef1f1d56e46e189fe11494450d68c5c91

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