Malicious PDF — malware analysis report

Static analysis result for SHA-256 7362e879e4c8e516…

MALICIOUS

PDF

52.5 KB Created: 2021-08-28 12:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a0531ede0b439bdab6847d3da081bfd6 SHA-1: 795067c7c4b4bd2fe1d8799be04d83cd6921d817 SHA-256: 7362e879e4c8e516187952c311476aa040453d96d82b22248e3593689f5aae92
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file that contains numerous embedded URLs, many of which point to compromised websites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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 https://avistravel.ro/userfiles/file/99877251271.pdf In PDF document text
    • http://prmakeup.com/Image/files/8420377740.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d47a4d820---kidexajedafifajokaj.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be1373525f---71800162430.pdfIn PDF document text
    • https://asharfilalkulfi.com/ckfinder/userfiles/files/18832548995.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/9o2gigmu6h7fedn78dkltugcl3/torubojo.pdfIn PDF document text
    • https://flyags.com/editorResources/file///pipawalutir.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210731023647.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/nimakolanezub.pdfIn PDF document text
    • http://realfootball.gr/userfiles/file/dopegunerebojopuz.pdfIn PDF document text
    • http://g-shocktou.com/user_file/file/ramutasegujipetanerolafux.pdfIn PDF document text
    • http://poorclarescork.ie/images/72684749714.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/57658433874.pdfIn PDF document text
    • http://jgbt.us/pds/userfiles/files/kolumajanatipixonaf.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16075abec53aae---25914438824.pdfIn PDF document text
    • https://delphin-restaurant.com/ckfinder/upload/files/58921591629.pdfIn PDF document text
    • https://mmszke.hu/files/file/xizanuz.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160acd7c985c80---nufevik.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160beec4cb39fc---jupojokojejozapidepegifa.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/5bdbd4a7c0c2a503e67a13bd9e5dcc74/xejeluvowatuliwabitizira.pdfIn PDF document text
    • http://cuspsurgeons.com/userfiles/file/72864530005.pdfIn PDF document text
    • https://estoniapools.com/contents//files/mivisuguragatekofukotibif.pdfIn PDF document text
    • http://randoquad72.fr/userfiles/file/xigexabedomopuwebavoli.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/4543afef8c9039c0c6adb15af9790ecd/fiwufajesozubapofubo.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b43d74c567---wuxusozaletimamutelap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=we+witches+3PDF link annotation

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