Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bee5b379904f807…

MALICIOUS

PDF

95.3 KB Created: 2021-07-24 00:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 92f1ca9c6746286a5fc3a6ec967f9da7 SHA-1: a8f3590121a9563c5aae45bb79bd4f8fc5ac347f SHA-256: 7bee5b379904f807a6a16aad813726bdc683a286c63e2d1fe8a022a552ae15f9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. Additionally, the document features a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to redirect users to malicious content or download further payloads. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

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://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/8db636add1b9ec26be894c66f74e5299/mefuworonewokolunudinedam.pdf In PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/b060820c8735e38f512c6e8a6fe550b5/xunutibirubugonusinumotaf.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2ae464a4c---62372128902.pdfIn PDF document text
    • https://everestart.com/images/stories/file/mevadaxexenebovixovidik.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/21abe2473a5631b267e7238b124a1ce9/77124376740.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/68957486254.pdfIn PDF document text
    • http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/bazupizofamiva.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/b68515048bec99f5b6aa7c93c6cae9e2/53253463763.pdfIn PDF document text
    • https://habibitours.net/ckfinder/userfiles/files/95309780172.pdfIn PDF document text
    • http://preserveproperties.com/userfiles/files/60984662179.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f39618d8f06---gebusokozeguti.pdfIn PDF document text
    • http://kappp.ru/js/ckfinder/userfiles/files/2692136890.pdfIn PDF document text
    • https://susta.vn/userfiles/file/65670533848.pdfIn PDF document text
    • https://vicotelecom.vn/static/source/images/file/68659491209.pdfIn PDF document text
    • http://geopraxis.it/userfiles/files/55381521502.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c906b4b8d---21829281288.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160826fdae6640---75233394144.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160803c1f5ae06---jusegemamax.pdfIn PDF document text
    • http://artpolyclinic.com/file/files/60434025977.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c6bc25b57a8---bigoganig.pdfIn PDF document text
    • http://umffz21.ru/admin/ckfinder/userfiles/files/mugoneda.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/gawutagutodagelijirenuge.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e08d75990a8---tuxixubapugudomopuzarodib.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/t441toemceeqoona35oe1eevs1/tajonokorekenemumu.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/80be333f5e18964afcdea112b665475b/gudajufivu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=can+i+check+my+fb+profile+visitorsPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CC 11188 bytes
SHA-256: 7a618cb4e29e05f73f70447c16c864b793f778b3b6efdaec9fef83f436ff26ff
font_01_sfnt_off00011199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11199 16544 bytes
SHA-256: 66b7945b99a9c78025a9a0ace4161995b24b08b80ea391fd428eddc3553bac27
font_02_sfnt_off0001285c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001406e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1406E 17288 bytes
SHA-256: 73b5b713e053ebdf911c8cfdff3ade7acfab2e4ddb39ebb42bed4890cb475659

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