Malicious PDF — malware analysis report

Static analysis result for SHA-256 501e84d40817b681…

MALICIOUS

PDF

77.6 KB Created: 2021-09-20 07:26:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8b652a6ad419cec917e6d32e5bad13ba SHA-1: 2644f71f327be19f0d9ff5053b51546535ba5759 SHA-256: 501e84d40817b6811ff0c5be9639606814aaef326718853841635b5a9647d899
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to various domains, many of which are identified as link farms on compromised or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The primary attack vector appears to be tricking users into clicking these links, leading them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6323

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://vedepcuaem.com/luutru/files/57576851634.pdf In PDF document text
    • https://kalitelivideoizle.com/resimler/files/53053493820.pdfIn PDF document text
    • http://vekosgroup.ru/userfiles/file/latomazawufil.pdfIn PDF document text
    • https://manorhair.com/uploads/files/202109071956326354.pdfIn PDF document text
    • http://m-camper.ru/ckfinder/userfiles/files/47925608781.pdfIn PDF document text
    • http://www.tamtrebinhminh.com/public/files/14540716766.pdfIn PDF document text
    • http://esrafisek.com/images_upload/files/55918339565.pdfIn PDF document text
    • https://jazykovytabor.topenglish.sk/app/webroot/gallery/files/fenufelikuw.pdfIn PDF document text
    • http://www.saaegfpolis.org.br/ckfinder/userfiles/files/vuwurobaw.pdfIn PDF document text
    • https://kompaspt1.com/contents/files/gijuxuguwurabumumizabo.pdfIn PDF document text
    • http://stamforgtechnologies.com/uploads/12110560636.pdfIn PDF document text
    • https://damiel.eu/userfiles/file/nozuvu.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16137bd06c4db4---dojupapibezaw.pdfIn PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/76904612217.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/161378cf9ad8ca---94527774425.pdfIn PDF document text
    • https://braveathlete.net/geektic/files/bupuxozenogexabire.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/161452b50b6e80---6996050143.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613598c78440c---fikojotewibobobenonuv.pdfIn PDF document text
    • http://konditsionery-odincovo.ru/upload_picture/file/25684120208.pdfIn PDF document text
    • https://dpengineerindia.com/admin/userfiles/file/65786081101.pdfIn PDF document text
    • http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/wopojorewatitenixanes.pdfIn PDF document text
    • http://enovosti.info/ckfinder/userfiles/files/49714050235.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=quick+launch+androidPDF link annotation

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