Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fedddae3e9e66a5…

MALICIOUS

PDF

76.0 KB Created: 2021-07-09 03:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: cad96cae1e14ca3900db8c032e0f9ab2 SHA-1: 796c3c2653b75ac039c4f97c5179fa40572f2a27 SHA-256: 0fedddae3e9e66a52a23879f5e6ebea17b0c44367b0fa72c58db693d02dda895
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous external URLs, many hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/1uds8ci0vmv579emuf60933b3t/xuzigegevesubolog.pdf In PDF document text
    • https://aviseco.ro/userfiles/file/gusovobulurilopig.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608c126e1a48d---xilex.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f357b6ea88---98057658394.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/jbh74uoqtuelk9p3otvsnet6o9/xiwadunawum.pdfIn PDF document text
    • http://tilestone-pools.com/i/File/76121894913.pdfIn PDF document text
    • http://chrisdepanneservices.fr/Sites/cds/files/76682949858.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/84772b2ea28380aaa97708e1b55bf9f3/ribapibunoxefegonazosowij.pdfIn PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/wakewisesuziredetatudul.pdfIn PDF document text
    • http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/23065504533.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/gipenuzul.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b22d04ba314---49221077101.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/mexefekutujol.pdfIn PDF document text
    • http://argyleliquidations.com/userfiles/files/sofosorer.pdfIn PDF document text
    • https://colegiumaniucarei.ro/ckfinder/userfiles/files/26052993908.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e07aeece5---9988370218.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/3fklfvjhoc4f81r9h245ikeir7/gevepukitatuxepepalosi.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/voguxone.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/83a413c6b12124657791a5d72bba6d45/71579782380.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/n3mdut04cqcgfl7co3h3g87nsn/fapuvanurifopeforakonutof.pdfIn PDF document text
    • http://dj-venci.com/uploads/pages/files/bizefamogokezeri.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/jerodijazifunulebakow.pdfIn PDF document text
    • https://hpsoft.shop/upload/files/vuxuwoj.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/a2f705d69746c58a33273be3b4343fe6/35884645737.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=bros+and+hosPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC733 10032 bytes
SHA-256: 9e36528337ce466c2638735bb4537d080da15395b3e0672d289f678ad09407bb
font_01_sfnt_off0000dd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD60 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF572 17804 bytes
SHA-256: 78d5bcc8c75aa9342a119a16c08c806b531d9dc71713c29f6b4ad3986f977960

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