Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc6bf7ca4d18916…

MALICIOUS

PDF

65.2 KB Created: 2021-09-07 19:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8ac45ecc97d3d1e93ed803edf6264a02 SHA-1: 580baa4753a6f6006692d8515ee67e47c71aeb54 SHA-256: fcc6bf7ca4d189162316a4b5462cb97d4a23c773ec08c01f676ce4efef89c8d1
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed for phishing or malware distribution. The ClamAV detection further supports its malicious nature, likely serving as a lure for users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4667

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://htk2.altrodesign.eu/ckfinder/userfiles/files/11652798606.pdf In PDF document text
    • http://hondatayho.vn/images/ckeditor/files/zogarixijewub.pdfIn PDF document text
    • https://ferest.ro/imagini_ws/50800841510.pdfIn PDF document text
    • https://purefeeling8.com/data/file/povuruni.pdfIn PDF document text
    • http://lidaoxc.com/upload/files/kisaninutavejituzazanenef.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9e58a782b---gilimaj.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/21ec2a11c25194b15bc4c5df20732f48/supigajet.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/ecf2c17480699d276ef733dde05cf484/porotiwusujinogopalajosi.pdfIn PDF document text
    • http://apartament-krokus.pl/userfiles/file/85967103828.pdfIn PDF document text
    • http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/28114968060.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/85c614f660621f193e409d41c1829490/javem.pdfIn PDF document text
    • http://robbinsfamilyhealthcare.com/clients/2/2c/2c787fa606fc56c3a3a24dfc5409695f/File/18697778381.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/1t0njcc5fri586p5be8v66gvu4/muxiwolebebowowodok.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/67111201112.pdfIn PDF document text
    • https://susta.vn/userfiles/file/vujiberejititarosarete.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/541enlfv6ari8dgf7e9o6dcrpv/63022110428.pdfIn PDF document text
    • http://krikrik.ru/uploads/ckfinder/files/86051394822.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160fe6bf21ba31---wevewatagadigomunetikul.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16129523be3207---13198426287.pdfIn PDF document text
    • http://cathyknightwaite.com/ckfinder/userfiles/files/dogomogibarutoburubuwa.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/94236087006.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/d6c679ef1e4fcbd9b308482c69c74e04/76008113963.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/11838932308.pdfIn PDF document text
    • https://skatrip.com/basefile/skatripcom/files/fegurinewaxovurenuj.pdfIn PDF document text
    • http://alarmy-kamery24.pl/userfiles/file/katutofutap.pdfIn PDF document text
    • http://dichvumucin.com/upload/ckupload/files/xarogokasejefo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=autodesk+autocad+2018+manual+pdfPDF link annotation

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