PDF malware analysis — malicious · bf8f27e8503be043

MALICIOUS

PDF

81.8 KB Created: 2021-07-22 00:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23

MD5: abd3188185f8bb76938b75d4e170153f SHA-1: c9471676f5399bcdd9cb74f2e410a8e7cd2de8a9 SHA-256: bf8f27e8503be0438cf7fcce2440973a0d549c17ec651d610c89738ce1fa6865

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous external links, many hosted on compromised WordPress sites, suggesting a phishing or malware distribution lure. The PDF's structure and embedded links align with techniques used to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.6802

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/ba3c246384733f6ab908709728b4787d/30718174669.pdf In PDF document text
- https://kisikana.hr/userfiles/file/vusumemigapexadus.pdfIn PDF document text
- http://orderkiwicafe.com/uploads/files/kodasobibanetu.pdfIn PDF document text
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607908daefac7---pisexobizoviwu.pdfIn PDF document text
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7bb107a9dd---2624264011.pdfIn PDF document text
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f544f3b471d---rafesuzabab.pdfIn PDF document text
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a16d2fef9da---8671220640.pdfIn PDF document text
- http://businessvaluationapp.com//fck_files/file/95670346892.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd0693f4be---80087250402.pdfIn PDF document text
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b549c88bd2e908e0aeb17c9da6cc6261/woxenajutisez.pdfIn PDF document text
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/qkdpv321uvvm9g10pca75u0sda/9222038332.pdfIn PDF document text
- http://kardelendalgicpompa.com/uploadfiles/file/bagozujexeri.pdfIn PDF document text
- http://paglialonga.it/userfiles/files/leruwuwazugituxutemeju.pdfIn PDF document text
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f28b84a60---namorukutopuweja.pdfIn PDF document text
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/901dd835c45103c46ab1f32a041aa8b1/98817713993.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/e1543c724e665530d554eb31e7f0ee25/75733774707.pdfIn PDF document text
- https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/a86e38a818f7ed21e7de96adcf8f55c8/56305730396.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160860e4ecfccd---3891164102.pdfIn PDF document text
- http://araonline.hu/uploads/file/45301771400.pdfIn PDF document text
- https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/7649d5b8175f6d0f7d3116779c389601/11347605803.pdfIn PDF document text
- https://alibabaoman.com/basefile/alibabaomancom/files/vakarulomi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=gst+act+2017+pdf+downloadPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eaca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEACA	10760 bytes
SHA-256: `555e5a6cd7fac493c7de106ade09b5cc2fcaa59f79eba820048bb26027e9e174`
`font_01_sfnt_off000103f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x103F7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011c09.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C09	17140 bytes
SHA-256: `a264ab0440d7c026bad460eae71f07ea4bb8ae24c88e5f2a49f19eb342679d88`

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