Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e07de7b319b3294…

MALICIOUS

PDF

72.1 KB Created: 2021-09-16 09:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 274cdd5689eabde749eb4681f2765baf SHA-1: 475207b4a5b727b1498453f1247d859a740068bc SHA-256: 7e07de7b319b3294758966521f4ed24f43a0536cba003c02947161214329a242
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm pointing to multiple distinct hosts, several of which are identified as compromised WordPress upload storage or disposable hosting, suggesting an attempt to obscure the final malicious destination. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://edubox.mn/uploads/users/0/files/xodalugid.pdf In PDF document text
    • http://dyglas.com/userData/board/file/33248379432.pdfIn PDF document text
    • https://simbhaolipower.com/images/file/xavisarufuvojoso.pdfIn PDF document text
    • http://serramentisiciliano.it/userfiles/files/sejigumamuwudika.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/kopapejoje.pdfIn PDF document text
    • https://keiba-like.biz/js/ckfinder/userfiles/files/mevidizoseri.pdfIn PDF document text
    • https://vgi-vn.vn/app/webroot/img/files/37295066402.pdfIn PDF document text
    • http://studiocariola.com/userfiles/files/juvalevuk.pdfIn PDF document text
    • https://rodolphe-blanchet.fr/Rodolphe/fckeditor/file/tagizowutut.pdfIn PDF document text
    • http://www.octopus-quatuorvocal.com/ckfinder/userfiles/files/lasun.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16133b114be797---2315941235.pdfIn PDF document text
    • http://vietsaovang.com/uploads/userfiles/file/dexoboresarabazuwulezo.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/95e7a52ec102689f67de958130aabb51/bemevik.pdfIn PDF document text
    • http://benrassam.com/uploads/files/88717922288.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1614191cba6dc6---23457677484.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/09/16/91333489058.pdfIn PDF document text
    • https://sunpower.lv/ckfinder/userfiles/files/14965213099.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media/retisokabu.pdfIn PDF document text
    • http://bebaldebaran.eu/userfiles/files/tanerirunozosufosomuso.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134032545890---73478396361.pdfIn PDF document text
    • https://lawweb.info/mycms/admin/userfiles/file/tasaxum.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161384e0990c1e---vazuselozebukubukox.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=as+the+gods+will+full+movie+eng+sub+hdPDF link annotation
    • 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_off0000b6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A7 10912 bytes
SHA-256: 7e2803f4fa31cc52b97fa65af721e287576303d39a2adbdaed1f960618e745dd
font_01_sfnt_off0000cf9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AE 16684 bytes
SHA-256: bbf10f39505eec87f6108b5d0578aebcbc24a0b316c6908a5b7d52f2925fe073

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