Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5966e00585cc2f…

MALICIOUS

PDF

62.4 KB Created: 2021-09-11 22:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: b0c5d448fb00b65a3e88115a3741fdc6 SHA-1: 0677425b7cae7158b9b0c0297af85b0396bf82bd SHA-256: 0c5966e00585cc2fd2f8b0241ce2f3e41903a934fb313f25302f6c7e1f78dafb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8029

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://drafthe.ru/uplcv?utm_term=use+android+phone+from+windows+10 PDF link annotation
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613827122a933---lafeji.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f45fa3f813---pesefituzagosatokuripevew.pdfIn PDF document text
    • http://hasdeu.md/data/userfiles/files/vogev.pdfIn PDF document text
    • http://le-nora.com/userfiles/file/47939937286.pdfIn PDF document text
    • http://vuoncotichdep.com/upload/files/66595604894.pdfIn PDF document text
    • http://elisa5888.com/shopadmin/upload/files/kodudupeselirim.pdfIn PDF document text
    • http://hfengly.dk/skoleportalen/userfiles/file/83586320703.pdfIn PDF document text
    • http://e3edu.vn/public/ckfinder/core/connector/php/connector.phppublic/uploadsfiles/67437319977.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a66ebc0dd---nugerepuvinewe.pdfIn PDF document text
    • http://zatacorp.com/upload/files/27089284754.pdfIn PDF document text
    • https://chokysitohang.com/Uploads/userfiles/files/pokelatuze.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/75410743505.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c99937301c---39938163629.pdfIn PDF document text
    • https://hongmao.tw/uploads/files/202109042310594274.pdfIn PDF document text
    • http://webinaris.biz/ckfinder/userfiles/publics/files/52762714395.pdfIn PDF document text
    • http://apicn.net/upload/files/49285051342.pdfIn PDF document text
    • http://tubesealer.com/uploaded/file/1888236327612f2c8b585c9.pdfIn PDF document text
    • http://luatkhangthai.vn/upload/fck/file/302282758.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/47896918914.pdfIn PDF document text
    • https://solturism.ro/images/file/tutet.pdfIn PDF document text
    • https://brillimet.com/uploads/files/202109052031364908.pdfIn PDF document text
    • https://producto.works/userfiles/file/zisujabifilimi.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16138dddd24dc9---19241116181.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/53c4721c686e8ba3ffb796fb95a5912f/sexanelegaf.pdfIn PDF document text
    • https://mmgrowersg.com/ckfinder/userfiles/files/vagujixomopuvix.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/202194614556597.pdfIn PDF document text

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