PDF malware analysis — malicious · edf1d17e4ed4a789

MALICIOUS

PDF

92.3 KB Created: 2021-08-12 22:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 94bd4e958361fdc22ea0f82a9245cbf2 SHA-1: d2e97c40549e5f6e048e9a5beb8a4a44a311f184 SHA-256: edf1d17e4ed4a789b15a38b05e87f893f557256e151f58e70896adc65acd86c8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users. ClamAV and ML classifiers flagged this file as malicious, specifically as a phishing trojan. The presence of external URIs and link farms suggests an attempt to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9978

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
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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://huntic.ru/uplcv?utm_term=who+is+the+god+of+destruction+of+universe+13 PDF link annotation
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/71117252703ae36a78c9fa294ed50480/60243766070.pdfIn PDF document text
- https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/03b7d1ad09e427fbc069aa5b5fc82d41/farerex.pdfIn PDF document text
- http://bulk-supplies.com/userfiles/file/wavoluwafigafisetife.pdfIn PDF document text
- http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16079fb73b9463---ravubuzafajewonuxitiwos.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609553ce79166---1611113923.pdfIn PDF document text
- https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7c6a1557e---tukawavesalep.pdfIn PDF document text
- https://amrapalispot.com/userfiles/file/mawuwazapevizewitaw.pdfIn PDF document text
- http://lotusburbank.com/uploads/files/wazupajoxu.pdfIn PDF document text
- http://aite-materials.com/upfiles/file/mavoxo.pdfIn PDF document text
- https://penzionradvanice.cz/res/file/57937343793.pdfIn PDF document text
- http://www.cafeinca.com/img/public/contenido/file/30162326866.pdfIn PDF document text
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717ab7a2157---12280641147.pdfIn PDF document text
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/o6frkmrm14k7ev0ns5bd4sdq0d/nibixuvux.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160c5a0af54133---21957467687.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a694a857d---99998076957.pdfIn PDF document text
- https://goodline.by/userfiles/file/vedepode.pdfIn PDF document text
- https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/605866a8198dde71caec241b9737f185/xodivu.pdfIn PDF document text
- http://srsheicha.com/uploadfile/file/sudarajapef.pdfIn PDF document text
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d63bccfe90---27713359269.pdfIn PDF document text
- https://kisikana.hr/userfiles/file/mozajagetoz.pdfIn PDF document text
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/5j85ih53gshd3ut8s4an83ddq6/91462649774.pdfIn PDF document text
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebb18c8bc5---42802533811.pdfIn PDF document text
- http://droprint.my/home/ququ4923/public_html/userfiles/file/moniwekulepinirebene.pdfIn PDF document text
- http://ruihuitax.com/files/file/nevapusini.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f3bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3BD	17460 bytes
SHA-256: `3b9b7398cbdd992f79fb008f61f5f04643ea1a530fc579224948c1378e562267`
`font_01_sfnt_off0001211e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1211E	10928 bytes
SHA-256: `95425f845ec28d811255319b88b223ec525ca0bf6d16a6c85329c4d9d407d98d`
`font_02_sfnt_off00013a5b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13A5B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off00015268.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15268	4152 bytes
SHA-256: `42b182975d60c456248d15835148f2992f795969e798ce109d4dd28eef392cc9`

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