Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ab58327e599fcc…

MALICIOUS

PDF

66.8 KB Created: 2021-05-14 21:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 6748a78444f0b87730db4fde3f7d7159 SHA-1: 7401a2e85e19bd5c0dfd6d9f883d134e18746ae4 SHA-256: c0ab58327e599fccaca3944c201acf6515881afe7c9427e92adc67ce1cf0d082
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised WordPress sites hosting further PDF files, indicating a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8307

Heuristics 5

  • 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
  • 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://plswa.com/wp-content/plugins/super-forms/uploads/php/files/d4faad4e5f4de861629ee543a10aaaf0/voxeramajosenedalezo.pdf In PDF document text
    • https://aquafilling.com/userfiles/file/lemobekive.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/f76f22eb13c60436537efe152aca31d8/73508230902.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/rerefu.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160721548da4ae---45144785145.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/5b6eccf884793ff58904760a51c90993/40140031283.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/7e2559ae49ba76cf234a6b32acabb472/53230754139.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160921ff781d42---punexusiled.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096b38653d1d---97192543820.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16081d9fa36950---60106054405.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e94e1b9bfa---nigozega.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/eb44bdcd49d0e6e1a229c8bbe6a3daa5/bamenaru.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/gujb6flq6mo8r15ei5d9nues44/mopulanuruxegomoxafu.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/vnhd0lsic17eoidjn54us0nncb/1160663344.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084a8562f238---22293012502.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=definition+of+absenteeism+pdfPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE1 5196 bytes
SHA-256: ccaab60fbc4c5ac2ad5e0520e831b92ceecfa0b44ec57782428b80297b3fb41a

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