Malicious PDF — malware analysis report

Static analysis result for SHA-256 88791a6d2b42370a…

MALICIOUS

PDF

48.9 KB Created: 2021-09-23 23:15:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: aadbdc548deb0bec7b8aafd8be99a0d2 SHA-1: 8f79ba8061ad6edc79c33784e8e8876eb142c076 SHA-256: 88791a6d2b42370a62d56928bc033c3be7756c01c69d13e4ea595d19c4e9755e
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document contains numerous links to disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, while many are unknown, point towards a pattern of directing users to external, potentially malicious, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7332

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://rqconsultores.com/userfiles/file/29440411534.pdf In PDF document text
    • https://jordan.si/dokumenti/file/bexoxexagimonelo.pdfIn PDF document text
    • https://christianklein.eu/Quansis/ckfinder/userfiles/files/xemanavonemudugalipalo.pdfIn PDF document text
    • http://25630638.kad.tw/kads/ckfinder/userfiles/files/juzufurutodozaxan.pdfIn PDF document text
    • http://celesteandtorsten.wedding/images/file/vejuxobuwediwiwirawu.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/wajirix.pdfIn PDF document text
    • https://perfumes.dropship-tracking.com/userfiles/files/dabadukarumowejevazik.pdfIn PDF document text
    • http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/31539200957.pdfIn PDF document text
    • http://pretaporter-pegah.com/userfiles/file/38426964145.pdfIn PDF document text
    • http://meta-min.com/files/4405794158.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a455b8eb04---36690287764.pdfIn PDF document text
    • https://festivaldelmaridaje.com/sgi_userfiles/userfiles/files/30522126248.pdfIn PDF document text
    • http://eco-versute.com/app/webroot/ckfinder/userfiles/files/85816545821.pdfIn PDF document text
    • http://af.ssla.ru/images/fornews/files/11768096316.pdfIn PDF document text
    • http://bbbo.handyfriendship.com/upload/files/muviwa.pdfIn PDF document text
    • http://www.gyndoktors.de/ckfinder/userfiles/files/zikodumixujawemudesudaf.pdfIn PDF document text
    • http://aallergy.friend-match.com/upload/files/93116027941.pdfIn PDF document text
    • https://aramlasmerok.hu/uploads/file/59545050426.pdfIn PDF document text
    • http://nguyenphat.com/public/default/ckeditor/files/bepol.pdfIn PDF document text
    • http://uts.edu.co/portal/app/ckfinder/userfiles/files/xejadasimevoni.pdfIn PDF document text
    • http://100gastro.cz/soubory/files/95507134519.pdfIn PDF document text
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/wilijobujoludezeriraluz.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/27910551419.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=am+fm+radio+apkPDF link annotation