Malicious PDF — malware analysis report

Static analysis result for SHA-256 15df689cf07accaa…

MALICIOUS

PDF

76.2 KB Created: 2021-07-04 07:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7ea89cb0ffdc7f51d5495c2c20ddff5b SHA-1: cf54802a1e396254dd7cf8f75eda6f781912a8f1 SHA-256: 15df689cf07accaa9c41c9c59cb81b8b6cc57fa50bb89c37a7674ebba6f4ecc5
124 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS platforms. The presence of numerous links, including one with a 'utm_term' parameter suggesting a tracking or lure mechanism, indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4683

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://artetendasud.it/userfiles/files/37984139502.pdf In PDF document text
    • https://micsys.in/userfiles/file/jisekiriweloratanofunakap.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/77281305788.pdfIn PDF document text
    • http://turatabor.hu/media/95257231952.pdfIn PDF document text
    • https://agentcctv.com/userfiles/file/memusumukinijudafuribavo.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160c030ff862d7---kukonulutefezepijogidiruk.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608de0faa07f2---kidetamikunabotede.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/6689b712782610476df8c4ff61b2c9e2/13015485550.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7d4bd718d---tilonimizoxamesiwizumug.pdfIn PDF document text
    • http://kppzp.pl/userfiles/file/rulujobupupafimef.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d7b145aa1b5---32461605645.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f712358bca---23424922572.pdfIn PDF document text
    • http://zzquansu.cn/d/files/mumemeda.pdfIn PDF document text
    • http://europavloeren.nl/siteimages/file/jarulomudoziregofo.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/889be6023ac8367465c628d47bdd60db/tovipasugekaba.pdfIn PDF document text
    • http://ithaca1962.com/clients/41687/File/sirixu.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/wodipavexexupujok.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/18126051455.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba4a636986---rupekumedurazawana.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eab21ca0ab---59669458491.pdfIn PDF document text
    • http://manilag.com/FileData/ckfinder/files/20210628_BAC530063B2B13F9.pdfIn PDF document text
    • https://successalpha.team/upload/files/64806035092.pdfIn PDF document text
    • https://lasvegasrebath.com/wp-content/plugins/super-forms/uploads/php/files/daed5d2a631290506e5fba0f5a942634/fokuxilaziwakebujaz.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/96448066040.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=my+lottery+dream+home+apkPDF 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_off0000d229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD229 27424 bytes
SHA-256: e387fbc768c0e5d7be3b9e756431d57336e95cb6e33127d272fdbbf1de69bfcf
font_01_sfnt_off00010a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A07 10492 bytes
SHA-256: f107eef147b41f2c7f5f9c315a38187cc5f97fe9e4f5af2b15b15f7ec2422028

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