PDF malware analysis — malicious · 2d0489a5a6db1b3d

MALICIOUS

PDF

80.4 KB Created: 2021-09-24 06:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 555a2360269759e7ee8ad764f3690369 SHA-1: d121c442c162f0d52425dd442e6f59885fd652ef SHA-256: 2d0489a5a6db1b3d4cf4c78bf402449c63cb5d03034bbb6bad317e6fbabec746

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URIs and the link farm heuristic point towards a phishing or content-luring attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.5563

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://synerhu.ru/uplcv?utm_term=free+robux+earning+sites
- http://gutachterbewertung.de/userfiles/file/74019778011.pdf
- https://losaltos.com/wysiwygfiles/file/64536182213.pdf
- http://skonasystems.com/userfiles/file/48655628992.pdf
- https://cokhivietuc.com/img-vietuc/files/sovobodamakotodozuj.pdf
- http://hfengly.dk/skoleportalen/userfiles/file/56888827322.pdf
- http://www.halpellet.hu/userfiles/files/48139345547.pdf
- http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613683127ed20---45294850945.pdf
- https://bahceneryaman.net/public/content-images/files/36418219289.pdf
- http://suurelepa.ee/data/file/rukaxiguloranukik.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/16147ed8a183da---87650149073.pdf
- http://vimbark.sk/editor_uploads/files/36767904148.pdf
- http://guoyangmoju.com/userfiles/files/tupupetadeloxuk.pdf
- http://massiimo.com/piceditor/file/jegifijuk.pdf
- http://tecmifor.cl/userfiles/file/57713954972.pdf
- https://jatransfer.com/userfiles/file/4183787234.pdf
- https://imotrading.com/images/userfiles/lupipomuxarem.pdf
- https://marblobaths.com/app/webroot/img/files/39110745116.pdf
- http://servicedental.it/userfiles/files/80888698785.pdf
- https://fotografski-studio.kost.si/userfiles/file/1849904668.pdf
- https://cortopolis.ar/userfiles/file/48521879615.pdf
- http://heninrealty.com/userfiles/files/polefepuviv.pdf
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f0bf.bin` `757dfbdbb91df8c62ada7f3e06923ef5d52849d3cbfb60269d7001b31a9541d7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0BF	10556 bytes
`font_01_sfnt_off000108f2.bin` `6338179338974b58d1892598965d09fa0f0b0cac8e26892f02f9f7b2d9b51f47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108F2	18596 bytes

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