Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fd3a4f314922ec1…

MALICIOUS

PDF

51.9 KB Created: 2021-09-28 20:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 508a3229e582cec8e9386de988e45ae8 SHA-1: b275c1d685533202bcac83de7adc560b2ff3c460 SHA-256: 9fd3a4f314922ec1c04bbd3e5b8733d2e967c2c6f1b32bde2b7812c17b7d84fa
154 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to lure users to download potentially malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7531

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://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/14824180018.pdf In PDF document text
    • https://zd-zeta.com/uploads/files/202109180856346684.pdfIn PDF document text
    • http://vektor-bezpeki.com/userfiles/files/92774107206.pdfIn PDF document text
    • https://asfus.net/virgsurv/userfiles/file/86307872203.pdfIn PDF document text
    • http://cameranichietsu.com/luutru/files/18648983375.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/ponenipeta.pdfIn PDF document text
    • http://gemmacapitalgroup.com/foto/file/4183435194.pdfIn PDF document text
    • http://sivam.pl/files/file/56558520067.pdfIn PDF document text
    • http://speakingaboutnetworking.com/ckfinder/userfiles/files/44123659014.pdfIn PDF document text
    • http://dental-forum.ru/userfiles/file/fozupe.pdfIn PDF document text
    • http://luberoff.com/userfiles/file/zifisi.pdfIn PDF document text
    • http://ovecollection.com/royal/admin/images/products/file/21936323997.pdfIn PDF document text
    • http://impex-italia.it/userfiles/files/joxozeg.pdfIn PDF document text
    • http://ladispensadicampagna.it/uploads/assets/file/89907125123.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/51470247460.pdfIn PDF document text
    • https://aalatour.com/basefile/b2caalatourcom/files/busopabagen.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613041becbadb---moxexuluvafefomez.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/50548626973.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346c69ed798---pevovokigen.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/3mnsna5b2hc7plomvigisjt791/15419390334.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612f22b613268---bemavatedowuwu.pdfIn PDF document text
    • http://mawaevents.com/uploads/file/1735271857.pdfIn PDF document text
    • http://qunjl.com/userfiles/files/41492550891.pdfIn PDF document text
    • http://tageedesign.com/ssmpt/documents/file/53826870536.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=infinite+flight+apk+2020PDF link annotation

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