Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdee416e418cc7f…

MALICIOUS

PDF

55.5 KB Created: 2021-09-02 16:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 7d4a4ea9b632b0235d83a9d8266e45c8 SHA-1: a5844ef1a92c70e037e3f42116c427bc1c3a312b SHA-256: 8cdee416e418cc7f562884f44ce2cd3f6459bcffc38d62e4dc8c34e8dff51330
124 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to compromised WordPress upload directories. This suggests the document is designed to lure users to malicious or compromised websites, likely for phishing or to serve further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3186

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://www.facyt.com.ar/ckfinder/userfiles/files/57718302901.pdf In PDF document text
    • http://ampletrekking.com/userfiles/file/wotonojifozusinakixen.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/16130920c02a25---37491065273.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/ferufifasugojewewobomeba.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/ad126e75bb1508c297a176489f66afbd/8707744450.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/f69c7e17f5c1605367ae753399ba0a2b/luvojanepotisaduvakopem.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/cb4072b452dbca83d30314c26938be8f/82079036047.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16094017d6921c---miwap.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/rabaze.pdfIn PDF document text
    • http://djapm.com/userfiles/file/58901412740.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160946d2601cf9---bopenevanemem.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/59863014001.pdfIn PDF document text
    • https://carparts-fixture.com/file/file/66498853475.pdfIn PDF document text
    • http://abwingstop.com/uploads/files/11246076670.pdfIn PDF document text
    • http://musthighschool.mn/ckfinder/userfiles/files/goxazibimerusirimabiruz.pdfIn PDF document text
    • https://pisangmanis.com/contents/files/13700379936.pdfIn PDF document text
    • http://area100impianti.it/userfiles/files/89624356964.pdfIn PDF document text
    • http://camwater.org/media/files/54578144134.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160988465d8ef2---9273554605.pdfIn PDF document text
    • http://mawaevents.com/uploads/file/gudikepukazagaxitixiluku.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/71635179950.pdfIn PDF document text
    • http://thunderstar.cn/userfiles/file/20210820015621904502266.pdfIn PDF document text
    • https://ises.ca/phpsites/vertical_living/uploads/file/58683665670.pdfIn PDF document text
    • http://heldermusic.nl/ckfinder/userfiles/files/59290324930.pdfIn PDF document text
    • http://cementfeet.com/userfiles/file/65188721461.pdfIn PDF document text
    • http://spain-ex.com/images/blog/file/noxuwutuwu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=plantas+medicinales+andinas+del+peru+pdfPDF link annotation

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