Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf969b9795067cb…

MALICIOUS

PDF

69.2 KB Created: 2021-09-07 00:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2015a8af4322ed2c7e4c89f35124f2c1 SHA-1: 60e1748e769d67f36db1dabac5adbb2d148c6d10 SHA-256: 7cf969b9795067cbd05305a8b088a0bf78c07bc944ba65eccfd3e27d0296fcec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF structure itself are indicative of an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9130

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://classicalgardenstatues.com/uplds/file/7723989372.pdf In PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d8629c759---35862079029.pdfIn PDF document text
    • http://starwindows.ie/ckfinder/userfiles/files/34146546398.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/faxifuziwuwufex.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c0fe265e1---zidepid.pdfIn PDF document text
    • https://mahae.hu/files/files/kejurojefagoworawenugep.pdfIn PDF document text
    • http://acupunctuuryao.nl/ckfinder/userfiles/files/mijoniluwagefura.pdfIn PDF document text
    • http://starlightcelebre.ca/clients/4/43/43e9139217482d7666ce300faf566241/File/dimidujor.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/uv1v3i9h4e1alko4219jm3sv22/13344533387.pdfIn PDF document text
    • http://heatkings.net/fckpic/file/pegujobupat.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160905599941b0---retegogavip.pdfIn PDF document text
    • http://www.vinoplaza.nl/img/upload/files/36475408684.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/21662615452.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a369e223806---pedodopativajerit.pdfIn PDF document text
    • http://lightofislamonair.org/uploads/files/momuvomitol.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b38ebbaba59---39971414315.pdfIn PDF document text
    • http://reopen911.info/media/file/67068414033.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/nojukukazipevesin.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa67ef6a799---nogizeboridemekifuripuvug.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/1i6q36rqsrng4j5dui236kgloc/gusevasafaliboxuzus.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/25400644953.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f8fdbf3dab6---janugiwabetunix.pdfIn PDF document text
    • http://hai-bi.com/uploads/files/202108250525256322.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/0485282d8f44d85c65973b6f9328b847/68943852944.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=libreoffice+pdf+formatPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFD 17372 bytes
SHA-256: 310d09b5c1b001e6df502f792f4b3b3ecc1c8acf2091bfbc5b6640650ca4c71e

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