Malicious PDF — malware analysis report

Static analysis result for SHA-256 d372b26c8927ec7a…

MALICIOUS

PDF

52.5 KB Created: 2021-07-08 06:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0df96181c8760e995d3bbf9dc96e5479 SHA-1: 9f9b4bcf8fa591ed30d25137ddebf573da8da501 SHA-256: d372b26c8927ec7a39a88c14d389f7e3ed15e5cead358f3f04e53a7e6ded270f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to compromised CMS upload directories, suggesting an attempt to lure users to malicious content or downloads. The structure and content indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

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://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/fe5movk7adl7hdop0pqseim7o1/27018803823.pdf In PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/jb07oqm0lk3hljj5c6sushpgo5/48529026576.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/gagesoxizexas.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a249241ec26---pisidakivonepenuragitibo.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084a5a147471---tibimemupiputadir.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/97575f1031179e4cd833394bdbb540ba/fifivogis.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/ecb34b9d2782407fed32f406155d57b3/purirajuduz.pdfIn PDF document text
    • http://grandchainfamilyfoundation.org/clients/85333/File/tovobulukibi.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb4bacbc50---48141003734.pdfIn PDF document text
    • https://takipcisec.com/calisma2/files/uploads/60810127463.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/ok69o53bkhvmt6km8fs4ft34d2/babajosunogosajawolaf.pdfIn PDF document text
    • https://serini-cloud.pl/uploads/editor/file/31262261341.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/logajafavelulisugevewez.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/14794698625.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/xofezuterogusu.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a90f07c185f---lixinemodu.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/e135bce13416eeb5e720d9eeb9a8602d/35531898833.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/wowupufos.pdfIn PDF document text
    • https://bahispesinde.com/gnc/veri/_files/32697326867.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/3d997476057998680ff079e3ea531e82/47594861430.pdfIn PDF document text
    • https://pasarantogel.com/contents//files/23357541689.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/gomovivumibava.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc508ea4f4---zekogepeporos.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/939a360ea284c6feb262c40735ceee90/vanebiwefarilazegebebukab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=writing+the+date+in+english+worksheetsPDF link annotation

Related samples 8

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