Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f0dccaf9d49535…

MALICIOUS

PDF

84.5 KB Created: 2021-06-10 10:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1dff19f4af798fba9463395759341f53 SHA-1: 4a873189df15b6a047bf6c939b7becdfec3abd6c SHA-256: 03f0dccaf9d495355d1baf1c2ebafcfde51bda03ecbee9f8dcb3b01fdf2b150e
156 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to various websites that appear to host malicious files. The primary lure, 'Descargar juegos ps3 pkg', suggests a phishing attempt to trick users into downloading game-related files, which are likely malware. The ML classifier and ClamAV detection strongly indicate malicious intent, with the document likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crewmak.ru/uplcv?utm_term=descargar+juegos+ps3+pkg PDF link annotation
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/fc336a8530a0c0a3e4eabebfcc999478/bowowajad.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608431c8ae195---gixeraxerofekepelefe.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/63478341614.pdfIn PDF document text
    • https://briljant-maleri.se/UserFiles/files/gafakojomexotigir.pdfIn PDF document text
    • http://mwflower.com/upimagesfile/%5C/50355049741.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/d8e5ebfd70f0fda0f2044f9709a649ec/3722112849.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/83087e8d226365cd0ac047bb9cead004/80857944152.pdfIn PDF document text
    • http://automotiveenergy.cz/userfiles/file/89966548378.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9e2690302a---bebijegubofudizu.pdfIn PDF document text
    • https://willmarlakesarea2040.com/ckfinder/userfiles/files/weputiromubawugowixox.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/robazej.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/33885887387.pdfIn PDF document text
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080328badab5---baturarabulemojo.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4ca5f24d1---wubugazizavovaruvesu.pdfIn PDF document text
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/9231e584661d6d251db11fb9db5ab19e/96138812465.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/s5cl94bk0uhkl4l3johkaaluk1/gozexibewexosu.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ae6fa3d5208---22944783520.pdfIn PDF document text
    • http://builderall.info/userfiles/file/51946594023.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607023672205b---90494185972.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71F 5020 bytes
SHA-256: 69b7be4d85fb13f805656708adb05baa2ed7af1f6491ca00b17b90796c6f9e04
font_01_sfnt_off0000f84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84D 11896 bytes
SHA-256: d6adfe7fd9dbf5ad133405baf149f238623302ee0409c8c372f0458484c4f687
font_02_sfnt_off00011f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F19 16208 bytes
SHA-256: c691c2dc236ff1c3149f8178f30dcb30456d959af2bd230901b395ad55359d31
font_03_sfnt_off00013458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13458 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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