Malicious PDF — malware analysis report

Static analysis result for SHA-256 7420ade99abebd01…

MALICIOUS

PDF

71.2 KB Created: 2021-06-13 12:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4ee91d9828e1093e7a6b59202278462f SHA-1: 5c9e4a86d4b3aa31cb10c06cc4e97d438028a0ca SHA-256: 7420ade99abebd013b6279f7675c3fd334d9cd97b05d7a5ede7f51fed2148bfb
156 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, and contains numerous links to potentially compromised WordPress sites. The document body, though heavily obfuscated, appears to be a lure related to 'selling stolen cars gta 5', directing users to a URL that likely hosts a phishing or malware payload. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://queure.ru/uplcv?utm_term=selling+stolen+cars+gta+5 PDF link annotation
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec73c33c7f---sapubawedonomufedi.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b3c0899e0---958131425.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609c790c5c604---rixijulaluxuku.pdfIn PDF document text
    • http://asustainable.com/global/file/nuwunu.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/momobud.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d1e666a29---20183155372.pdfIn PDF document text
    • http://oreade-breche.fr/userfiles/file/wowomuxenatoforadilogimel.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085fb8a05e07---14848578483.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/16085ee1ee5ed7---tuzenatexulofo.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-05-28/images/files/36533875013.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/98b4ee1vmt0avvcd2c4edh72g7/kesefamuwol.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/96167229168.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/98546256955.pdfIn PDF document text
    • https://mimpiindah1.com/contents//files/jefimejijamunubebojuj.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606da3077b9f8---rotujafukadad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E0 5192 bytes
SHA-256: 3f121810030a16c51a5f9d3c3f6908148373fa3e8dd9732b2506ba3067203631
font_01_sfnt_off0000eb9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 10668 bytes
SHA-256: 5f1537e4cbc23a39f8295fa2427438c3fde1eee77f75b4f93c2ef38b735246eb

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