Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0ac39f2380e435…

MALICIOUS

PDF

86.4 KB Created: 2021-09-05 20:36:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e0895c300469dfb98c4acc395c82942e SHA-1: d0893eb4c001d3cef0604cf0673852e9a58f3071 SHA-256: 3e0ac39f2380e4356a72ab02d75b42891f3556d51c70087c84c8971716f9094b
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites or disposable domains. The primary purpose appears to be phishing or distributing further malware by luring users to these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • 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
  • 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://garglob.ru/uplcv?utm_term=rivervale+shores+pdf PDF link annotation
    • https://a5productions.com/home/a5pro/public_html/ckfinder/userfiles/files/gujigigajofamukiwuduz.pdfIn PDF document text
    • https://rimi.sk/userfiles/file/35131649707.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bf13ee534ee---75888986728.pdfIn PDF document text
    • https://mimpishio1bet.net/contents//files/32454670415.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e39e6aa7d10---ronepugirasoxixipadovapev.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/670a2ff0c039d0947195a8beecaf15da/rilikopatov.pdfIn PDF document text
    • http://rlangkhan.com/upload/userfiles/files/46432737893.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/nuxewobuluzenunoravejog.pdfIn PDF document text
    • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/89824454733.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e7e2d2d09---lumuj.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c14b40b3f4e---bipafepuninajezid.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/38577763334.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077279c98df7---24382090213.pdfIn PDF document text
    • https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/56546289711.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/wezuledepumeguso.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8db65c66ed---rikipedepik.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/kutokubigekofipamax.pdfIn PDF document text
    • http://dok-vo.ru/userfiles/file/9560214946.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/c411440959444412227d99f601a7e7b4/vonegufomosoforurina.pdfIn PDF document text
    • https://muacash.com/webroot/img/files/levalivevekigis.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/1ff60544bd204768dd881fffa0178639/xedotegane.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/b56c31f1a71fd3f6a648df3a8be2e7c4/remapifik.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/a5003d6e34e4d9b3ab74a91cc846ab60/kopufogedepepu.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a461f7df61---86905451963.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609d34d0a77c8---jeripib.pdfIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD1 10504 bytes
SHA-256: 1596e00faf9217aeda797b3ff8c16bf316eb916f8867ee2774995814682faa01
font_01_sfnt_off000105cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE1 17972 bytes
SHA-256: 271f78abafc36d1e3f0fec26d7135cd405a30100f1452bf117a8db1050005e41

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