Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f112b714293db4…

MALICIOUS

PDF

47.8 KB Created: 2021-09-09 11:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 153abbfc27af71c0e2cd17d7e260b782 SHA-1: 0dcb0a569624102c48cd20edd2dc106063e802ce SHA-256: 43f112b714293db485f1c06031d536375e2dedd7b242d50e70ab7179a0934968
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to redirect users to malicious content. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/d11cb7063b01013e1ae623da81f17674/42914617092.pdf In PDF document text
    • https://handientu.vn/userfiles/file/fusatibati.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/topen.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/80263649206.pdfIn PDF document text
    • https://ooo-kenk.ru/userfiles/file/10397316642.pdfIn PDF document text
    • https://sakura-bashi.com/uploads/files/202109030322266501.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f708183040---89071478654.pdfIn PDF document text
    • http://thementalhealthadvocates.org/files/userfiles/file/bojaseges.pdfIn PDF document text
    • http://goforthegreengolfpools.com/userfiles/file/51108532600.pdfIn PDF document text
    • http://cokhilegia.com/upload/files/95591634824.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/78390218845.pdfIn PDF document text
    • https://krassimirtaskov.com/userfiles/files/kotolitarazo.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/b0bb33fa8e22558c512816f9f6143bae/99673377648.pdfIn PDF document text
    • http://musthighschool.mn/ckfinder/userfiles/files/63010375023.pdfIn PDF document text
    • http://bobas24.pl/Upload/file/womadapizotojukudowot.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138e53147819---79520750199.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/bowuxerimo.pdfIn PDF document text
    • https://armenia4d.com/contents/files/16976826908.pdfIn PDF document text
    • http://canigrup.com/userfiles/file/86001746051.pdfIn PDF document text
    • http://rewitex.pl/userfiles/file/33279852151.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16135fe8971562---32532575611.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138bc8210572---46081486169.pdfIn PDF document text
    • http://optimumnieruchomosci.pl/uploads/userfiles/files/tuvuwu.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16136aa81d00a8---87272625448.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/tetupuzek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=what+is+accessibility+on+androidPDF link annotation

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