Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c08cbcce0a5b70…

MALICIOUS

PDF

82.2 KB Created: 2021-07-19 09:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 83a9ad962df16fd826e63e2f12db0675 SHA-1: b46fa2fc580f2c6be3897dabce0212dc80e6b65c SHA-256: 00c08cbcce0a5b70c14f853ad2c62de57e2a788eea01e28cb6fcfa888c091154
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4647

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://didaconcept.com/admin/fckeditor/file/88852398957.pdf In PDF document text
    • http://avs-market.ru/admin/ckfinder/userfiles/files/vekikalokagamofapate.pdfIn PDF document text
    • http://ibookingkr.com/FileData/ckfinder/files/20210703_8D24BD02F2EC7176.pdfIn PDF document text
    • https://artbynela.com/uploads/file/10656271241.pdfIn PDF document text
    • http://teraval.cz/res/file/79188595742.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098e1cda45e4---20861781818.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/xurefalug.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/e4f069edd5d734b5e71c16f89eb2fc13/18868888449.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/af8940a8780c1bac253476f014af2bed/pakakonov.pdfIn PDF document text
    • https://limblength-sldf.com/userfiles/file/malokoximivufinelomawitu.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1609619822f13d---vuxaganemasulepu.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c415a2cf87c360db0a792a8b745c9367/98430527316.pdfIn PDF document text
    • https://pui-vital.ro/msg_media/file/redatu.pdfIn PDF document text
    • https://magyar-logyogyasz.hu/fileok/file/34041122297.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/1rs5u1v75n8lr8rdibkcmbrpnc/64879047989.pdfIn PDF document text
    • https://palezieux.com/ckfinder/userfiles/files/norunilapirofesadizitun.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/61717720724.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad933f273e1---gezobadapotelizejoz.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b28d570b5fc---19809962539.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/ba9c14441b7f2c8e6da0d33ee1df5b28/pozubo.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072c4d6d3cfa---96149640885.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/20215141242345068.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=in+the+em+wave+the+amplitude+of+magnetic+fieldPDF link annotation
    • 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_off00011af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF0 16084 bytes
SHA-256: 325c5f5cda05429ae92d15c23118ca1b8712e485108c584e1e30b0ff615913b7
font_01_sfnt_off0001301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1301C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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