Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeefd96b6f31bf14…

MALICIOUS

PDF

210.0 KB Created: 2021-05-10 01:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a0f5a0cc896fe626bb55bb5e31d3a54f SHA-1: ed1576370007308449e3e34b71b28e8abafdbda5 SHA-256: eeefd96b6f31bf141864206f8818cee593f38ef49a919687f0d8bf05da301c5e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous URLs pointing to compromised WordPress sites, suggesting it is used to distribute further malicious content or facilitate phishing attacks. The presence of embedded URLs and the nature of the heuristic firings indicate a pattern of leveraging compromised infrastructure for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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.
  • 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://crewmak.ru/uplcv?utm_term=angular+6+formgroup+array PDF link annotation
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/9418d81140923479ebd6c18e8f5ddd82/67341218316.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/23qec5c2ivj01gh5rvkjosemrh/37541936443.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b97de30b79---95284045729.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d63f0255f7---fowevewiwikojarenotoliv.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/73150960976.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7656f12ba---81508465938.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/713bcc4a96edf1f8524d09b4a3f9311c/nimonasojas.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7efe5936---97299171048.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c0cf37507---90747374220.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/otqj6l02j7mcqfm5qvn288jtma/87353135880.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098296f680c3---74924055407.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/tikipuxesinavufose.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16077e30258d2c---14172740947.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160781373b201b---bakefovabaxibuginasarubin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001627b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1627B 135828 bytes
SHA-256: 50897ef3b72e70b5c466672a83cc257d1ea3fe543984fd9e370edaa527f09ffc
font_01_sfnt_off0002f2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2EC 4924 bytes
SHA-256: a4dfadd17b37827ed0da90cce595372496cc81b3d685eda3089ce1fea703516d
font_02_sfnt_off00030394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30394 11228 bytes
SHA-256: 1bfa9ce2f2953f1fd9f306fef3f4f8eebc7dc43f27fef06adbbb2f629cfbc916
font_03_sfnt_off000329c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329C0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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