PDF malware analysis — malicious · ccc8c9b44ceaf3ca

MALICIOUS

PDF

79.0 KB Created: 2021-09-01 05:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: e5f44b5f89bce6538bd28584f5872bcf SHA-1: 6166e79a51bad1d95c9380edac82d366a45827f4 SHA-256: ccc8c9b44ceaf3ca45224b129330c21eb0cc4e84781d3b8d6ed54560ac9d1e3f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, suggesting a phishing or malware distribution lure. The ClamAV detection and ML classifier further support its malicious nature. The file's structure and URL patterns are indicative of a link farm designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.7431

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://bioident.pl/photos_fck/file/45050296106.pdf In PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082494d5850f---68738243279.pdfIn PDF document text
- http://dnt-mayak.ru/content/File/suzanekabevidoneba.pdfIn PDF document text
- http://gadkowski.pl/repository/filemanager/file/48713166350.pdfIn PDF document text
- https://valleyrestoration.net/home/apf/public_html/ckfinder/userfiles/files/musaxipekodo.pdfIn PDF document text
- https://bursac.net/userfiles/file/7287498394.pdfIn PDF document text
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/7bcd3f6041d1333c6c03f1d8fae4c94c/88010673457.pdfIn PDF document text
- https://marosme.ro/hirek/file/duveviziwawojidured.pdfIn PDF document text
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098d87c2a02b---rumofojut.pdfIn PDF document text
- http://alliusie.com/userfiles/file/80618113596.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610dace3a98a7---3344570774.pdfIn PDF document text
- http://nenorm.com/files/files/86684515446.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/fb30e4d000edab1d8a1f5e627e88bea9/95801302226.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0bc312fd9---tajemuf.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/8a265ab9be9ac99b7ee44d006325bf92/tazilif.pdfIn PDF document text
- http://batiment-tunisie.com/userfiles/file/97498869187.pdfIn PDF document text
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e90c51aea64---68713062289.pdfIn PDF document text
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf3f25b368f---kifedanoba.pdfIn PDF document text
- http://cjatkinson.com/userimages/33779272645.pdfIn PDF document text
- http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16089679b81859---balogemisabeka.pdfIn PDF document text
- http://goraku-sangyo.com/userfiles/file/74753471487.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b87a8cc1f---34677525372.pdfIn PDF document text
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/00c19405c9618ab47c374f3d73bc5a1e/68004075035.pdfIn PDF document text
- http://africareview.in/userfiles/file/lekibadodewedubupob.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=star+delta+wiring+diagram+with+timer+pdfPDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e6f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6F8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ff0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF0F	10816 bytes
SHA-256: `cb20660e3d71f7ed44d37b42352231ceec12153645504d46064c7ee59d1b478f`

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