PDF malware analysis — malicious · ebe7e695ac43d1f9

MALICIOUS

PDF

86.3 KB Created: 2021-09-12 16:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 2d3031afe055815cd750a62edbed0c6d SHA-1: 04537f621e2a52126486db3992bece199b8b0394 SHA-256: ebe7e695ac43d1f938ba0e4cc73a70b8ae524a5c54b5c989cc050e96f9ae32b4

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URLs, many pointing to disposable domains and configured as link farms, suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9952

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
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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://smidgel.ru/uplcv?utm_term=robux+get+free+online PDF link annotation
- http://bettynblue.com/upload/fck_img/20210904/file/xojebaxatilamibevukemimoz.pdfIn PDF document text
- https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161353b9cc396d---36418766536.pdfIn PDF document text
- http://cen7dias.es/userfiles/files/kigesodutuma.pdfIn PDF document text
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b3841e115e---fimalifis.pdfIn PDF document text
- http://sicilyontable.it/userfiles/files/40820886211.pdfIn PDF document text
- https://gimenezricarte-deltabogados.com/ckfinder/userfiles/files/sajewitowawegegonutativ.pdfIn PDF document text
- http://alexlunacoach.com/img/editor/file/wibozokuxikorugaredoze.pdfIn PDF document text
- https://ladulceseguros.ar/noticias/fckeditor/file/86407111934.pdfIn PDF document text
- http://aurora-c.jp/files/files/wepejekubini.pdfIn PDF document text
- http://gimhaejazz.com/fckeditor/userfiles/image/96404760374.pdfIn PDF document text
- https://yocarbroker.com/upload/ckfinder/files/20428979235.pdfIn PDF document text
- https://beldapromosyon.com/calisma2/files/uploads/mefozanuzunexoko.pdfIn PDF document text
- http://box8websites.com/ckfinder/userfiles/files/16269795863.pdfIn PDF document text
- http://jyotiacademicpress.org/uploads/file/dipulax.pdfIn PDF document text
- http://praguynakorn.com/praguynakorn/picture/datapro/files/zikakuwifobususejufopil.pdfIn PDF document text
- https://webrekruit.com/php_codes/Scott/VieauAssociates/code/userfiles/file/pulinoregin.pdfIn PDF document text
- https://ecoledesgourmets.com/userfiles/file/59009438330.pdfIn PDF document text
- https://happyfun.tw/uploads/files/202109071552515555.pdfIn PDF document text
- https://likeevent.it/writable/public/userfiles/file/72360278214.pdfIn PDF document text
- http://jimsclub.net/new/board/img_tinfo/file/20210909074753.pdfIn PDF document text
- http://gmart-express.com/demo/uploadpic/file/35253545093.pdfIn PDF document text
- https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/74052511995.pdfIn PDF document text
- http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fepizoba.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- 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_off0000eb69.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB69	18688 bytes
SHA-256: `c02bc243180dffba46df158dd65e5188aeb9ed5836f206c858e06f1759f48e2c`
`font_01_sfnt_off00011be3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BE3	10444 bytes
SHA-256: `0f0f80510b93d18b41f41e3755e2c28ed1b6682376cb0e18feed8406c57188d0`
`font_02_sfnt_off000133b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x133B6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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