Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e767371d7071ebf…

MALICIOUS

PDF

77.5 KB Created: 2021-06-21 20:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8d8a2392a54e5f9f9fe53b4c327bf3e2 SHA-1: 0724de0781c10591dbb72a4a2372e44ae1a9e8fd SHA-256: 6e767371d7071ebf99feeb36c96f03bac7d47d3ecbe2a5b4382bf6d1c2cdb8df
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link farm pointing to multiple compromised websites, likely to trick users into downloading malware disguised as software. The document body, though heavily obfuscated, contains references to 'Vortex cloud gaming unlocked apk', suggesting a lure for potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8363

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://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/36c55af0b9d8599d3077d091d95ae61d/xesigokulazi.pdf In PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/b6b3b920af872a2a46b4cf1d3fa2e0e4/94703243702.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607068635797c---53699564890.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/22566984453.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/46480525541.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/jl0l6d1p8c0511ip2in7852s7d/49045575154.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/3162bb1d060be19ddbbb2d76f78b786a/96303942609.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/71697362284.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7aa7de4120---pawenenadurujisilumofevu.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/gulepuvodobetese.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa60c7bc867---rilokezuzefalipiziru.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/riafa2mncnhnkpoparr1gc1dpq/ruwegiboleparijapej.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/4b96a2d38fc9afe131a10d3cfe83346d/benamojerozomubinob.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/c093e4a2a2eea27baa675a480c7420b0/wiwiwumifumesikikipamuza.pdfIn PDF document text
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16084f75b37b91---66098703740.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/76b6ad3db9662cfade930987bd610ccb/jiduvawatizokuvidiji.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085ca3787cdb---87838574640.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/dugopanotagat.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a65b021c1f2---50768715616.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=vortex+cloud+gaming+unlocked+apkPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48C 5312 bytes
SHA-256: f27498b936f21030ac5c05dea2dff5e32cedc3c3f581cdb3c2b1f6214dcefb1d
font_01_sfnt_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 21008 bytes
SHA-256: 4ce3be16555e006e3a5d784e4ff0041f316056b32652986e3dcc5fb90f1d914e

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