PDF malware analysis — malicious · cd85094cfcd917b8

MALICIOUS

PDF

72.1 KB Created: 2021-09-21 20:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: b2f53e5c7c5ca9f917644f03ede21e17 SHA-1: d6b12f7b9128667df16de786161ed04d7b390bc6 SHA-256: cd85094cfcd917b888f70ec3598d1f75a5544e829e44bf956abb11310c746701

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, with a high heuristic score indicating it functions as a link farm on disposable hosting. ClamAV detected this file as Pdf.Phishing.Trojan, suggesting a malicious intent to lure users to potentially harmful sites. The ML classifier also flagged it as malicious, reinforcing the assessment of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.8295

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613368327edbf---30226681122.pdf In PDF document text
- https://semangkabiji.com/contents/files/98324178583.pdfIn PDF document text
- https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131a2c759d42---83195999408.pdfIn PDF document text
- http://paitoonbox.com/userfiles/files/gujisu.pdfIn PDF document text
- http://sicurezzaips.it/uploads/file/8214917428.pdfIn PDF document text
- http://mylivediamondinventory.com/uploads/files/finuxupidugo.pdfIn PDF document text
- http://urs-certification.com/gais/image/file/92388266125.pdfIn PDF document text
- https://perfectsextherapy.com/public_html/userfiles/file/wokivawov.pdfIn PDF document text
- http://fotocaroli.it/userfiles/files/62907317675.pdfIn PDF document text
- http://moriefrusca.com/userfiles/files/83195422820.pdfIn PDF document text
- https://jaurrieta.net/USERFILES_JAURRIETA/files/13765036552.pdfIn PDF document text
- http://thietbibepnhahang.net/media/files/pixusodejijixesedusux.pdfIn PDF document text
- http://saxonrt.hu/img/userfiles/files/vumibunusulegajekofawe.pdfIn PDF document text
- http://www.grifin.sk/files/zogedaf.pdfIn PDF document text
- http://pro-customer.de/userfiles/file/81350653705.pdfIn PDF document text
- http://lpxs168.com/filespath/files/20210908075908.pdfIn PDF document text
- http://sxsasa.org/images_fck/file/1630508471.pdfIn PDF document text
- http://shyjjc.com/v15/Upload/file/2021916192555286.pdfIn PDF document text
- http://phucuongplus.com/upload/files/4686943883.pdfIn PDF document text
- https://www.benkorner.nl/admin/library/ckfinder/userfiles/files/69037017965.pdfIn PDF document text
- http://dichvuhangngay.vn/uploads/image/files/45430630381.pdfIn PDF document text
- http://kutyasturak.hu/images/files/21104826922.pdfIn PDF document text
- https://terminal.hr/userfiles/file/demolatametidapuxased.pdfIn PDF document text
- https://www.ewdel.cz/ckfinder/userfiles/files/gogurejot.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=jio+hello+tune+app+downloadingPDF 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_off0000d933.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD933	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f14a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF14A	10580 bytes
SHA-256: `db90669f3de4e73b15102ff4eb78e8ea5f4d57042253ce0b6da8a56fe46e430b`

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