PDF malware analysis — malicious · a95c74426e0bf191

MALICIOUS

PDF

84.0 KB Created: 2021-09-08 16:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: ca1fe0428687ee456ec3b8b1a4af5a40 SHA-1: d2f4b6495c9546c85d9b1b0f54913b0b33a7a24e SHA-256: a95c74426e0bf1911fcce602db3abf8d7c9d8ae387b4d7ef0e4e5b7faf0b9db6

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript actions and numerous external URIs. The PDF structure and numerous links suggest a phishing or malware distribution lure, likely delivered via spearphishing. The embedded JavaScript, though not fully detailed, is a common technique for initiating malicious actions within PDFs.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 6

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.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://pixomot.ru/uplcv?utm_term=measuring+blood+pressure+manually+step+by+step PDF link annotation
- https://thefencedocumentary.com/adminfiles/file/topavuzutanof.pdfIn PDF document text
- http://jaluzipro.ru/public/userfiles/file/46343933727.pdfIn PDF document text
- http://szzxwx.com/Upload/Upload/file/202196238261677.pdfIn PDF document text
- http://cuahuyhoang.com/media/ftp/file/vitikepiketurixo.pdfIn PDF document text
- https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/90053daadf901aa3f198539227a308d5/21678006345.pdfIn PDF document text
- http://rrarental.org/upload/file/10716955691.pdfIn PDF document text
- http://cellesekorea.com/ckupload/files/73020751626.pdfIn PDF document text
- http://proxima-online.it/public/file/22669447355.pdfIn PDF document text
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16137ed796c4c0---36445521137.pdfIn PDF document text
- https://ww150001.linebot.net/upfile/files/20210908171158.pdfIn PDF document text
- https://247christianity.org/fckeditor/userfiles/file/887406897011630784023.pdfIn PDF document text
- http://stamforgtechnologies.com/uploads/vevirezafulafuvesasow.pdfIn PDF document text
- http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/zazepuxokinosivi.pdfIn PDF document text
- http://www.corazondelsol.es/ckfinder/userfiles/files/zupuremis.pdfIn PDF document text
- https://funbugs.ie/userfiles/file/rimemelumoxi.pdfIn PDF document text
- https://toscanafantastica.com/userfiles/file/biselu.pdfIn PDF document text
- https://hoangphatdanang.xetnghiemadndanang.com/uploads/image/files/futijakawidoke.pdfIn PDF document text
- http://gevenschoenen.nl/ckfinder/userfiles/files/jowet.pdfIn PDF document text
- https://swaarm.de/app/webroot/upload/files/desamovazovilonuf.pdfIn PDF document text
- http://ddservice-bmw.pl/userfiles/file/dibejibuvod.pdfIn PDF document text
- http://hasicimosnov.cz/foto/Image/file/20308411504.pdfIn PDF document text
- https://radiosmile.hu/upload/file/20523328043.pdfIn PDF document text
- http://sghscsjamarai.org/guruhargobind/userfiles/file/kiwokaj.pdfIn PDF document text
- http://jplus-ag.com/upload/files/BodyFile__6138302FE194E.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_off0000e1e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1E7	11080 bytes
SHA-256: `a68bc98db973d651b748d4ea768b780b43a86767eb0578fa012c8e14d64f28bb`
`font_01_sfnt_off0000fb4a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB4A	17968 bytes
SHA-256: `017899a6060c1ae0058f68714351e0116751099777b3ba806a3ef550c32237aa`
`font_02_sfnt_off000129e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129E1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.