Malicious PDF — malware analysis report

Static analysis result for SHA-256 96eb909aa14e7c4b…

MALICIOUS

PDF

65.1 KB Created: 2021-09-05 19:10:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f67e565ff4088baec091aa20fd63a6e7 SHA-1: 37029a23193c3cee026fd62f0267b8b3ec6a9e53 SHA-256: 96eb909aa14e7c4baeeca0319ab54dd0a634cfee86dada2555573cef21038700
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary function appears to be directing users to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9183

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://sushiloverca.com/uploads/files/gotusap.pdf In PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d67923d5b6---19012261553.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/sififafupudozedeb.pdfIn PDF document text
    • https://intrigantka.ru/images/userfiles/file/womow.pdfIn PDF document text
    • http://bifruit.mk/ckfinder/userfiles/files/zusonebadajelotez.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/jesojefubowisegev.pdfIn PDF document text
    • https://dakhoathienhoa.net/images/files/zapamobekimajafododusute.pdfIn PDF document text
    • http://zgic.ru/!upload/files/60831995820.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/32eed22e3c153395d294d8f80562ff1d/palejelekukimiduzovonuk.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/d7d9a81650e37a365ca1286b056d49ae/25431895346.pdfIn PDF document text
    • http://koszyczarek.pl/userfiles/file/gawiripesomelipe.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/gd9si67tqc487rhocuv6dd4n7n/nemalar.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/22904108470.pdfIn PDF document text
    • http://parkhigh65.com/clients/4970/File/kowatosesibe.pdfIn PDF document text
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/24b41fef2e4ca2ab2f40291d7f4982c3/wuzenowaletixoxe.pdfIn PDF document text
    • http://studioindelicato.com/userfiles/files/83480574515.pdfIn PDF document text
    • http://serbanindustrialconstruct.ro/uploads/files/vabunu.pdfIn PDF document text
    • http://3sdent.com/upload/files/garorajonafa.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/88293314903.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/56f14bfe78fda13930ee9a6197ad3a23/87711281345.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/41e65e04a75ffe4b4859b09baae8644a/12886658326.pdfIn PDF document text
    • http://soles2walk.cz/data/file/pazolojabefaralotagevefet.pdfIn PDF document text
    • https://xenang-mitsubishi.com/fckupload/file/60034948249.pdfIn PDF document text
    • http://barrospizzadb.com/uploads/files/napibakubiwi.pdfIn PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/rozori.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=website+design+principles+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C5 17184 bytes
SHA-256: f40781486625cb09601cd89b270fea0db64fbf91f3939e54866a06c28d78aa6d

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