Malicious PDF — malware analysis report

Static analysis result for SHA-256 6589c26859a09615…

MALICIOUS

PDF

70.3 KB Created: 2021-07-05 05:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2edb7f457af5ac9a533d64daec99ad2b SHA-1: c7494317fa3b5405cd0bcb858a2b03bf351c222e SHA-256: 6589c26859a0961548cbc53ff0ad4c436d0c11285273b574f54cc8dff495e26c
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6933

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://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/a47fb51a5c2bc33773c1f5c83b9b116c/70537251139.pdf In PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ecb3a5fdac---pidubulu.pdfIn PDF document text
    • https://stratasphere.online/userfiles/file/pesonulatenel.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/4b73f0775157fd0390217a822d35bae4/40769071610.pdfIn PDF document text
    • http://rivieahk.com/clients/5/51/51325344bd1517f257d6959d5350918e/File/81785939128.pdfIn PDF document text
    • http://cathyknightwaite.com/ckfinder/userfiles/files/21077890688.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081315373366---jogupetaga.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609879501c231---pulabawimekomixazabe.pdfIn PDF document text
    • http://vodnik48.ru/content/file/22398906383.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/difitikiruviriju.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/neqrurdq69nivftrf6o629mbv4/35926846189.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1b577b6b6---giwoged.pdfIn PDF document text
    • http://aiaato.com/FileData/ckfinder/files/20210617_4B785B38CA8155CD.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/6pnd5tmc1cuikt1n09b6o0i38q/40743800146.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160bd59a46126d---xukamosibiguvobeviga.pdfIn PDF document text
    • https://clinicamanila.com/ckfinder/userfiles/files/24151771788.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/223566b43c5cd866a2aae8a0083292d5/mugolarozuzutisijiriluxe.pdfIn PDF document text
    • https://tractorpulling-emmeloord.nl/upload/file/pidus.pdfIn PDF document text
    • http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/14395447380.pdfIn PDF document text
    • http://ylpcl.com/ckfinder/userfiles/files/gonazoxanukojoxoje.pdfIn PDF document text
    • http://kasystemofkarate.com/clients/861259/File/rolizuzom.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a467e169df9---31588766356.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=3rd+type+of+conditional+sentencesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ecd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD8 17416 bytes
SHA-256: 78cd45c7abf5a3d445d7e086072572b68b9657b9479d18278855854a6c9075fd

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