PDF malware analysis — malicious · a10e4c50863ac5c8

MALICIOUS

PDF

70.5 KB Created: 2021-09-27 15:20:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: ad9fbd9ecefeea4024e156de641ce7be SHA-1: f04650d1a3f5e5655f1f0d39f1d369412dd8c213 SHA-256: a10e4c50863ac5c8fa65033806c90bde938915805a7d8c1bb14b54603d7a638a

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file contains embedded JavaScript and numerous external URIs, many of which point to disposable hosting and appear to be part of a link farm. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware distribution. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. 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://cructi.ru/uplcv?utm_term=betty+boop+android+theme PDF link annotation
- http://ipmarketing.net/FCKeditor/editor/filemanager/connectors/userfiles/file/38733695844.pdfIn PDF document text
- http://handlpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mexezalixaneresitepewara.pdfIn PDF document text
- http://honeycontacts.com/uploades/userfiles/file/22249794739.pdfIn PDF document text
- https://www.multilandtours.com/assets/ckfinder/userfiles/files/43533122296.pdfIn PDF document text
- https://ls-machinery.com/uploadpic/files/202109270713551818.pdfIn PDF document text
- http://fsoa.cn/userfiles/file/53961656198.pdfIn PDF document text
- https://dijitalsanat.link/upload/files/99693106781.pdfIn PDF document text
- http://roletyhanarol.pl/files/file/buvaretinejilotiz.pdfIn PDF document text
- http://daisin1977.com/js/upload/files/tefubesikixujavaluguwab.pdfIn PDF document text
- https://anakaygame.net/calisma2/files/uploads/wozaralutosofekirabolase.pdfIn PDF document text
- https://www.ruchya.com.tw/upload/files/65258792890.pdfIn PDF document text
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1614c1b12b1a95---fituv.pdfIn PDF document text
- http://pwr-tech.ru/userfiles/file/lakugiziniparaxopan.pdfIn PDF document text
- http://mtcongnghiepxanh.com/upload/fckimagesfile/suzivuxobigezenikoxafonap.pdfIn PDF document text
- https://pasarangroup1.com/contents/files/55602344507.pdfIn PDF document text
- http://konemara.hu/userfiles/file/74660314262.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614014a132a7d---lanofukubu.pdfIn PDF document text
- http://phayaotechno.com/UserFiles/File/jerolidikot.pdfIn PDF document text
- http://pcccphucvinh.com/upload/files/97022505564.pdfIn PDF document text
- https://myarchitect.es/ckfinder/userfiles/files/56860844163.pdfIn PDF document text
- http://denprokhorov.ru/images/file/majijitubomutebuk.pdfIn PDF document text
- http://natalieshuff.com/uploads/file/32354787016.pdfIn PDF document text
- http://grupophi.es/uploads/files/kodonebepajibakizivoj.pdfIn PDF document text
- https://viscom.bg/uploads/wysiwyg/files/rirok.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_off0000b293.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB293	15536 bytes
SHA-256: `df13cf13ef1fe8a2b1ee2fb436c3b86c93aab3381995086fd620ce3f878c9345`
`font_01_sfnt_off0000da22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA22	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000f239.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF239	10752 bytes
SHA-256: `282afe5924969ad56e3b8936ac64e8961fef05a84164e2c1144ed36f2429a337`

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