Malicious PDF — malware analysis report

Static analysis result for SHA-256 b657785bdc32766d…

MALICIOUS

PDF

58.4 KB Created: 2021-09-23 10:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 51f70ee50e2b580974913a39afc9fc2a SHA-1: aa10ba104b2e5f036c2bd52752adc06649cdf259 SHA-256: b657785bdc32766d01a44819f8bdd6b3224a87afba856e0a0bfc364489fde093
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The file was detected as a phishing trojan by ClamAV. Static analysis revealed numerous embedded URLs, many of which are part of a link farm hosted on potentially compromised or disposable domains. These links are likely intended to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4143

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://medvor.ru/uplcv?utm_term=background+process+in+android PDF link annotation
    • https://fotojursa.cz/userfiles/file/xinesatulitaxen.pdfIn PDF document text
    • http://sovaimm.it/userfiles/files/68523255163.pdfIn PDF document text
    • https://renewone.de/files/likawa.pdfIn PDF document text
    • http://creativecoms.net/userfiles/file/84833328042.pdfIn PDF document text
    • http://enidental.com/userfiles/file/20210910014538.pdfIn PDF document text
    • http://www.hermosabeachbungalows.com/userfiles/files/jawowimitamubix.pdfIn PDF document text
    • http://iucecb.com/files/file/jozefajupuxogenibi.pdfIn PDF document text
    • https://www.retake.dk/ckfinder/userfiles/files/95062564155.pdfIn PDF document text
    • http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/80725747268.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/3f44f5bceaf9991fec90c1b7b3a3d13b/gurusonedo.pdfIn PDF document text
    • http://thebodyclubonline.com/userfiles/file/40670218241.pdfIn PDF document text
    • http://manpukuorder.com/uploads/files/35544222346.pdfIn PDF document text
    • http://stomerijindex.nl/images/uploads/tubijo.pdfIn PDF document text
    • https://marblo.marblobaths.ph/app/webroot/img/files/45746619253.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614affa4e23a6---42345853224.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161472bd6dde4a---dalize.pdfIn PDF document text
    • https://chilegastronomia.cl/uploads/userfiles/files/sevebivinabanenudifa.pdfIn PDF document text
    • https://www.poolsrus.com.au/application/third_party/ckfinder/userfiles/files/kipowerobukawokanaro.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/bekurivigax.pdfIn PDF document text
    • http://geasit.it/userfiles/files/gixos.pdfIn PDF document text
    • http://phuquytravel.com/nguyenvanlinh/files/sexopizul.pdfIn PDF document text
    • http://1666-3668.com/attach/userfiles/file/18045904061.pdfIn PDF document text
    • http://aa-nusd.jp/tolaw.pdfIn PDF document text
    • http://weddingdove.tw/uploads/files/202109170838533463.pdfIn PDF document text
    • http://moonlightmontessori.com/upload/files/pilogezinakikew.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/66673460982.pdfIn PDF document text
    • http://savoie-outils-coupants.com/ckfinder/userfiles/files/57233386395.pdfIn PDF document text

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