Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f097eefebee60b…

MALICIOUS

PDF

86.9 KB Created: 2021-09-01 17:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a3deb95c0a0e7d59037fa06d810721ec SHA-1: ab15a38bd963c3673d8152ffe730ebf480462088 SHA-256: c6f097eefebee60b78f0e490fb41fc7fc7be3bfe8f2eed444128051208348f88
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites, likely intended to redirect users to malicious content or further stages of an attack. The presence of these links and the overall structure strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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
  • 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://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/b27d8906ee271b81146737ac04f266c8/97564860012.pdf In PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/jivifezaliwuvewu.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/ml1haava1nlpvni1op8ul7i4o9/tojiwusimozidanuvekupiv.pdfIn PDF document text
    • https://tuvanthietke13-5.com/webroot/img/files/49983924541.pdfIn PDF document text
    • http://zhatuogz.com/uploadfile/file/zajovixiwunozurewo.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/8mmrkbjdr8ou2k06fjs0j46547/60240147158.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/54148309356.pdfIn PDF document text
    • http://lsneotek.com/ckupload/files/muxozarejojawasijavili.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/zujazifusaxuka.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/de49a0f017bb14eaf28038be5a389f88/benevu.pdfIn PDF document text
    • http://gillyard-johnson-mahoney.com/clients/62114/File/76891549566.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1bce726cc---62715735429.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2381754beb---fuvolevitigam.pdfIn PDF document text
    • http://superfasttv.com/uploads/files/daxifubefajewop.pdfIn PDF document text
    • https://stl-log.com/htdocs/cljr/data/files/29571810743.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/877716b9b136bdf49bc2574e1382b1a8/zamotubafovamor.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160763330b36a8---figalede.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/4d759ebe185216469fbfea214228737f/jabajixagikelu.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb4e91e16c---padodozubumujulezegux.pdfIn PDF document text
    • https://truonggiangcompany.com/userfiles/file/fikedokis.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/nubiwujitoxagovevoxidabe.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/lejanofapivubazejafizobak.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b62bd9343d3---siwixubonedidipiro.pdfIn PDF document text
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/7286522778769f86dd16b3c5b563ed5d/72946338649.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/fusokefaxijefogadivewijaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=chak+de+india+full+movie+download+moviemadPDF 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_off0000db75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB75 21360 bytes
SHA-256: 747769d6d5318470219768a807ca07376ac8ad27df8a5e59e61f65d1d1c4d236
font_01_sfnt_off00011269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11269 10628 bytes
SHA-256: 29e7b655497881a1410b38dc4e8accac8d129f62b6f1266a71f7b9625a6c9f3e
font_02_sfnt_off00012a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A84 1936 bytes
SHA-256: 581ee6410b39f3fc3c0b7eee44a1f688a16d32601ddb4ff915e7da4a385d4a1a
font_03_sfnt_off0001337c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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