Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cab25bd8db400e9…

MALICIOUS

PDF

47.6 KB Created: 2021-09-13 02:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d32d356b0fb4624003f94e2dcbb7aa0a SHA-1: fcbed88f037b608a71aa107596f9679b0e253780 SHA-256: 7cab25bd8db400e944695d523fa41172c3423e438bf367451a28d54904be09a7
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting domains. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware delivery. The presence of a link farm suggests an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5712

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://fpole.ru/sadm_files/pavunezalufesuj.pdf In PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/8177fbdd36c8e369cc61cba7548bdeb9/zefawarazavimusuvura.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/winigotutufovedijesa.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/25258609128.pdfIn PDF document text
    • http://vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/fulapabilenizolugum.pdfIn PDF document text
    • http://sabaispa.net/userfiles/file/joriboboniwijetadeki.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/994308059.pdfIn PDF document text
    • http://classicalgardenfountains.com/uplds/file/lukajozegexumesifojok.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/l6o4j2sd05m7go7vek3k2e4227/25914978648.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/jopafugazuniganogera.pdfIn PDF document text
    • https://ajambary.com/userfiles/file/19405432928.pdfIn PDF document text
    • http://timebymtm.com/upload/files/13630260387.pdfIn PDF document text
    • http://columb-sklep.pl/userfiles/file/80242173713.pdfIn PDF document text
    • https://firsatoyun.com/calisma2/files/uploads/15236151608.pdfIn PDF document text
    • http://kawana.tech/userfiles/file/66834097909.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/mlk0jhbb2qra2a8a14rc46teo6/75422120714.pdfIn PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/zizanuxut.pdfIn PDF document text
    • http://namhungholdings.com/uploads/ckfinder/files/wolixobej.pdfIn PDF document text
    • http://yh-nutri.com/filespath/files/20210908181308.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/bijunuxebot.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/q4lspo8r4267hf7dt75foimosc/67958872339.pdfIn PDF document text
    • https://asmitahrgroup.com/ckfinder/userfiles/files/35494041204.pdfIn PDF document text
    • http://dlastudenta.org/Upload/file/galokafefanerijifu.pdfIn PDF document text
    • https://cakenflowersonline.com/userfiles/file/79386252367.pdfIn PDF document text
    • http://innotack.com/userfiles/files/39342779140.pdfIn PDF document text
    • https://novitas.ro/files/61115960516.pdfIn PDF document text
    • http://megamento.com/_UploadFile/Images/file/22711155012.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=1st+phone+to+use+androidPDF link annotation

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