PDF malware analysis — malicious · e3d73a38e632fbf2

MALICIOUS

PDF

84.6 KB Created: 2021-09-17 02:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: eb4719303fe0cc298c91330daec79c70 SHA-1: 24b7c531335404a4ca4c501085afb7f4665df960 SHA-256: e3d73a38e632fbf2f45aa0ee0fbd5a88b62140d15bac5e0e9c2f813aaea6e903

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to potentially malicious domains. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate attempt to create a large number of links on disposable hosting, suggesting a phishing or malware distribution campaign. No scripts were extracted, but the presence of external URIs and the link farm nature strongly suggest the intent is to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier suspicious score 0.4647

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://pixomot.ru/uplcv?utm_term=hbo+max+latest+version+apk PDF link annotation
- http://holdemigny.fr/ckfinder/userfiles/files/69106989821.pdfIn PDF document text
- http://didaconcept.com/admin/fckeditor/file/70137120802.pdfIn PDF document text
- http://divapharma.com/uploaded/file/96744716945.pdfIn PDF document text
- http://iccjsc.com/images/uploads/files/4415935093.pdfIn PDF document text
- http://rulife.ru/ckfinder/userfiles/files/58517758215.pdfIn PDF document text
- https://hanedantoptan.com/upload/files/lobututiz.pdfIn PDF document text
- http://bolt.fo/public_html/userfiles/files/luvipidodumepepuzazufuku.pdfIn PDF document text
- http://maidichike.com/upload/files/65630804565.pdfIn PDF document text
- http://ux-school.ru/files/files/noketekozexe.pdfIn PDF document text
- https://koltoztetes-szallitas-lomtalanitas.excore.hu/ckfinder/userfiles/files/vamoga.pdfIn PDF document text
- http://vertracapital.com/uploads/files/55380030380.pdfIn PDF document text
- http://shijijiaming.net/filespath/files/20210913060259.pdfIn PDF document text
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/hvl207mjmdgp2h9aljm66t5u74/70073714264.pdfIn PDF document text
- http://lednotice.com/userData/board/file/59896101034.pdfIn PDF document text
- http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/suxiweje.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6e455c648---99424123284.pdfIn PDF document text
- http://studiotecnicomaglio.it/userfiles/files/50365573805.pdfIn PDF document text
- http://salamino.pl/userfiles/file/29602332663.pdfIn PDF document text
- https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/87644913021.pdfIn PDF document text
- https://ilonew.tasksplan.com/userfiles/files/tawikunosanike.pdfIn PDF document text
- https://ancoraeducacion.com/images/dazogel.pdfIn PDF document text
- http://goldartline.ua/userfiles/file/149871534.pdfIn PDF document text
- 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_off0000ff0c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF0C	19552 bytes
SHA-256: `c864af24a2475ad5ae6b4149f722701e4bac79ae0dcb74fb6390216e48644f7e`
`font_01_sfnt_off000131c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x131C2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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