Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0e5dbf85326d4c…

MALICIOUS

PDF

75.7 KB Created: 2021-06-22 17:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2ce94d9af567f6d3bc1cf0947991e945 SHA-1: 16da0bc54e8ec24c083b7f4c9da8f8d9f47fbef1 SHA-256: 6e0e5dbf85326d4cb6aaf7a88e55c5897ee354adaa8b3dfd72204f4ae5ed0cfb
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a link farm pointing to a compromised WordPress upload directory, suggesting an attempt to host malicious content or redirect users. The presence of external URIs and the nature of the heuristics indicate a phishing or malware distribution lure.

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://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072004c6e273---roxagefujoxabanewar.pdf In PDF document text
    • https://aprilboya.com/userfiles/file/vojijulezigufa.pdfIn PDF document text
    • http://cheers-gifts.com/userfiles/dififusediralewipudaf.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/43e65712a324125271ee5a32be04de77/55540279385.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/khpa39emf0lhfs32a68qoe48nk/83524933539.pdfIn PDF document text
    • https://ibeguiristain.com/userfiles/files/wipabiz.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/zevemuzurawevejegexorowo.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/21360833455.pdfIn PDF document text
    • https://iphonerepairservice.nl/app/webroot/files/userfiles/files/10709174801.pdfIn PDF document text
    • https://myveolife.com/wp-content/plugins/super-forms/uploads/php/files/9a9b39a6078c786f71e49d02eb3e2ec3/50256145781.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/13664907019.pdfIn PDF document text
    • http://kaupa.cz/userfiles/file/84715770566.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/30749400701.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/zefitobugenovezus.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/ho8f6qtlifo1ics57bm8rv53d6/49921004398.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
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=endgame+movie+onlinePDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE06 4596 bytes
SHA-256: bcf5835551988325755df806139c79fe84047c73b9aa0221172a4af6f99682f4
font_01_sfnt_off0000ed8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8C 11344 bytes
SHA-256: 42d343ebd2756fec2c97858c6dc980870d12ab44a4fc70d30f2501253bd9ed32
font_02_sfnt_off000113f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F9 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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