Malicious PDF — malware analysis report

Static analysis result for SHA-256 178579c7936b7cbf…

MALICIOUS

PDF

55.8 KB Created: 2021-09-22 17:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 48e46fcff040cf50e1481298e4aac3d0 SHA-1: 7370adb5c1573592461374208b5cc198bbecf666 SHA-256: 178579c7936b7cbf660d640355801900bffe4213f64f6c9361f8c00beaa46c61
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to websites hosted on compromised or disposable infrastructure, indicating a link farm designed to distribute malicious content or phish users. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged it with a high probability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5757

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 http://katachizu.com/img/news/files/80730218042.pdf In PDF document text
    • http://csc010.com/userfiles/file/20210909032228_2u95al.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/zomobafewapagufazexirata.pdfIn PDF document text
    • http://bona-agra.pl/Upload/file/86508635744.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/2c0a5518616eff633f905987ac8b95e4/96098015527.pdfIn PDF document text
    • http://bangtaisay.com/uploads/userfiles/file/26508007514.pdfIn PDF document text
    • http://eko-gospodarstwo.eu/files/file/10033696920.pdfIn PDF document text
    • http://clingac.com/d/files/8267259984.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/pazajaxuromev.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/161427be40c71d---xinovogus.pdfIn PDF document text
    • http://orenprom.com/img/account/file/jogomajelofagifunixipi.pdfIn PDF document text
    • http://zonweringbelgie.be/ckfinder/userfiles/files/xelubuwepizewupesasaro.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/laq31cdld9pdqq5ktnddbfqbvg/domenafijisatig.pdfIn PDF document text
    • http://logicparcel.net/uploadsEditorfile/31715268912.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210902061805.pdfIn PDF document text
    • https://fengshan-zhennangong.org/upload/ckfinder/files/63996254213.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/202198046224931.pdfIn PDF document text
    • http://maivietnamesecotati.com/uploads/files/witunoroxiwudi.pdfIn PDF document text
    • https://carsen.sk/editor_uploads/system/files/vagemovusalubadikirubub.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/f217e730338c35db9d6f137a4c5ac419/81173209264.pdfIn PDF document text
    • http://fqcycpa.com/jingkelun/userfiles/files/20210903012107.pdfIn PDF document text
    • http://marmaraisg.com/images_upload/files/48485915388.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=new+gba+rom+hacksPDF link annotation

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