Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7382e59589c947…

MALICIOUS

PDF

75.1 KB Created: 2021-07-04 03:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5b7b988b920ca4a40e55375abaccb48b SHA-1: e4423e1508b3dcd8e206d1126ba6df54572213c9 SHA-256: 2d7382e59589c9478b39c0baf72520a068902099787214900866bfca973fc87d
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, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to compromised CMS upload storage, suggesting it's used to distribute further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • 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.
  • 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://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607abd6298b0a---sirerer.pdf
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7746cae22---jefijakoturapig.pdf
    • http://akkoryazilim.com/userfiles/file/12909986876.pdf
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160d5541e256ec---79100089847.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/77e0f009c43ed4fa6a0ab67a797b5640/zidovovo.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098366c2a6d8---24791581190.pdf
    • https://candbco.com/ckfinder/userfiles/files/12344392683.pdf
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/9b22434ppd1cppo5m4rf27rr93/zituwatorizok.pdf
    • https://n-zvuk.ru/upload/file/58949060127.pdf
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/fb09652ecfa143ee7e70df5b8212e774/kegibuzibonavanumu.pdf
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16093f9db5d93d---23111295832.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bf9e07380---40784309297.pdf
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/f9uihjllo8j58m6uptnp78fi8q/35406570277.pdf
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/b5302c87053b91313cd74238a426ef0c/basuvasexarejefenalavifo.pdf
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093e90cc1a4a---47379990290.pdf
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5a6663fef---gewefatirolamupoxin.pdf
    • http://mousike.it/img_ins/files/45854704729.pdf
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/222mi9a939conb6t9e6br8js86/17871150348.pdf
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/0q9u0i5ahopfe7cnf7h33fk7e6/jigexijedobiwasedavomose.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609646cb82e4b---24248456180.pdf
    • https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/de7b80d132be168a7f4ebc73f300ea34/makid.pdf
    • http://wccflooring.com/userfiles/files/71984379032.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+convert+a+pdf+into+html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3a4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A4 16792 bytes
font_01_sfnt_off0000dbb6.bin
7d09c65e89205676d8e6a0486a5fc5cc09b5553af79d83080415a97bf6efb060
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB6 16484 bytes
font_02_sfnt_off00010687.bin
f47dce95432c0b4f1198df1363fe8ad17fa2324061a13213ebe06821f3cee9ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x10687 10860 bytes