Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82d0c0de99c3dd2…

MALICIOUS

PDF

421.0 KB Created: 2021-07-06 15:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 4ac18378d937b808ba1db5f14477fdba SHA-1: a952e4335e71051bb25877af5aab2bb058c4dbca SHA-256: b82d0c0de99c3dd2f2c014a1546abab2e2320cf961c68eefbc89a5246d4a3f7d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links, many of which point to compromised WordPress sites, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristic firings indicate that the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8396

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 http://gabortech.com/admin/file/59193905921.pdf In PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/7c7c410a39ab8a86facac1dead096bb1/72235296842.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/47959253372.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/5baebf340384e62cb3698cb71c2939ad/1784535300.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c259c56a849---55802196569.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/fskf2o60q6p1pglcocouddbq85/93435076273.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/43358581333.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa3ff86145---jafujodupukepufavo.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160945a24e43a1---99581978091.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/7e71caee3d9340980d21cc368e8e940a/tulurarur.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608014a9be735---gozinufuxibuwip.pdfIn PDF document text
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/2846532495.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/zimilu.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090b66eee67a---ziroxafigul.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/f049e8f5f2afcd40fa4fa669a092fd5a/47782410771.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/9923d686e3e00e87c321dfe057ff6e98/lunore.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/f9301f4a901e79e0b4f6c8605f9f7655/59042141337.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/62884059729.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f045c9d070---fimobugubefu.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2a8814483---nidisozitituzo.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/21423486266.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/zumawaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=to+the+lighthousePDF 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_off00062a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A26 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0006423d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6423D 10084 bytes
SHA-256: 2539680fd47ad6916699aebcd14b3ccbf11e66045186c887f39a5a8cf8afcfa1
font_02_sfnt_off000658dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658DD 16796 bytes
SHA-256: 1d4a96581f072c8aca10fb4b416bdacf29f90478a18508385af256f520c5c915