Malicious PDF — malware analysis report

Static analysis result for SHA-256 90da695bc8c25ec7…

MALICIOUS

PDF

62.3 KB Created: 2021-09-03 04:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: aaf760f684f33552ae1527d71a3785ab SHA-1: dfcf0e47655d8527aeec18dac02c4440c29e7393 SHA-256: 90da695bc8c25ec7bbb9f11c942989831d254f4d8b630d59890f31749b1e4faa
174 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious document, including a link farm pointing to compromised CMS uploads and a direct IP address link. ClamAV also detected it as Pdf.Phishing.Trojan. The presence of these indicators suggests the PDF is designed to trick users into downloading a secondary malicious file, likely a trojan or phishing executable, from one of the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5048

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://oticonshop.net/ckfinder/userfiles/files/balepenenapokubigom.pdf In PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/30883151279.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16129df7699beb---98465538519.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160b16be8b68c6---lenuvesud.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/rqcriu3cdbmnlukkfcq2pnrv6r/6526952024.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/dd440b184a96a3c06897e61c291653f7/22707739338.pdfIn PDF document text
    • http://igorodstore.ru/files/userfiles/files/85678174290.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/da7a1a0946db5c959a4f41dbe5198217/73357928570.pdfIn PDF document text
    • https://starwebline.com/calisma2/files/uploads/87555185075.pdfIn PDF document text
    • https://cheesykeju.com/contents//files/82940688738.pdfIn PDF document text
    • http://naturallabs.de/userfiles/file/63916139988.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/3303141174.pdfIn PDF document text
    • http://hmed.vn/upload/files/wabonigado.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/foxaritovomuxejirutaber.pdfPDF link annotation
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a595ded2ddf---84302925957.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/4hh244q83up3ojdh8triqu6bil/runuvavetazuwu.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/saviz.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607869ee2f750---47926519503.pdfIn PDF document text
    • https://www.smartfutureexpo.com/ckfinder/userfiles/files/93315652885.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/tnmbm3g14ddh5ml3rl5fr48um3/zijupemililagibot.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2d0de75d7---82754832854.pdfIn PDF document text
    • https://llibreriaha.com/img/events/file/49103502415.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/5b0f3bf19f62423fede654d3dc57471f/nasupaxodelolunomej.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/5cc1f79af847e83eb60ff4970aca7526/10566259099.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=menggabungkan+pdf+free+onlinePDF link annotation

Related samples 8

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