Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e16a6c6a6af928e…

MALICIOUS

PDF

48.0 KB Created: 2021-09-16 03:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 39f28a4eeef5c26d7af634a4724728cc SHA-1: 6ff6e7e9c8e21e8c1c251c97b1795127a14d2132 SHA-256: 3e16a6c6a6af928eaa487aa60682009cfe2c8f123e0a243ebdef6a561a6037f2
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also exhibits characteristics of a link farm, with numerous distinct hosts pointing to PDF files, suggesting an attempt to obscure the ultimate destination or distribute payloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6671

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://autosoftware.company/autoresponders_images/files/83269666099.pdf In PDF document text
    • http://ikuma-car.com/js/upload/files/24969434347.pdfIn PDF document text
    • http://yds-wcv.jp/free_images/files/vamenonepazale.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/fofurelowuvakulaziv.pdfIn PDF document text
    • http://ch-bovi.com/upload/files/16692983865.pdfIn PDF document text
    • http://chayka-svg.ru/files/losafozidavoje.pdfIn PDF document text
    • http://hybsch.it/upload/file/39205348224.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/zemerigelejagigenajuvol.pdfIn PDF document text
    • https://panificioilcavaliere.it/userfiles/files/milibevewugalimiv.pdfIn PDF document text
    • http://tabbanbros.com/admin/fckeditor/editor/filemanager/connectors/upload/file/kopavopi.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/73975231451.pdfIn PDF document text
    • http://back2wood.de/userfiles/file/31004691352.pdfIn PDF document text
    • http://sladkiy-ostrov.ru/userfiles/files/73082694747.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/161355f90611f3---87118651948.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210908_E41E77764800B7F7.pdfIn PDF document text
    • https://balarampurblock.in/ckfinder/userfiles/files/beguwuremuxojubifubage.pdfIn PDF document text
    • http://hoshitorionline.com/uploads/files/pajemol.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/pojonesuketoputolozise.pdfIn PDF document text
    • http://art-ball.net/files/file/87307567418.pdfIn PDF document text
    • https://hoya.hr/UserFiles/file/xiliridugamedig.pdfIn PDF document text
    • https://big-affaires.com/img/pics/files/mivamifaj.pdfIn PDF document text
    • https://andrejc.si/files/file/99876562939.pdfIn PDF document text
    • http://azizavacanze.com/userfiles/files/28451636081.pdfIn PDF document text
    • http://lachina.cn/upload/file/86176105172.pdfIn PDF document text
    • http://peoplefoster.com/pliki/malix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=lineage+galaxy+s3PDF link annotation

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