PDF malware analysis — malicious · bf60767800ce1381

MALICIOUS

PDF

89.6 KB Created: 2021-08-11 22:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21

MD5: d2d03620f554c1be93fab021f75536d7 SHA-1: 89f3fef9617653e4c8c28291260b3cd746a94777 SHA-256: bf60767800ce13817100bb0505796d6e6c0fba3f5554859aec8e78d87bfc0859

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting it is designed to redirect users to malicious content. The presence of numerous unknown URLs further supports its role as a lure or downloader.

Machine Learning

Nyx PDF Classifier malicious score 0.9905

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 http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160dbcc61cbd2f---12097385061.pdf In PDF document text
- https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/fc8e80ea8fe56bdaff269fd2e9b8bad0/kurovozufudupesufomu.pdfIn PDF document text
- https://thegioidongphuc.net/ckfinder/userfiles/files/gilolafodevuxupaluru.pdfIn PDF document text
- https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/423e74cace34d09b6ac93bb5f4735529/63412717729.pdfIn PDF document text
- https://actor-conseil.com/files/file/61368887778.pdfIn PDF document text
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/cab3a17f5a97a8909c687915bbf58074/60277315205.pdfIn PDF document text
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/a1fe1a82c2b4b003ab060a837ee991fc/vekem.pdfIn PDF document text
- http://nemochem.cn/upload/files/93849800383.pdfIn PDF document text
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609833a05ea0b---watobeketazumiwadalil.pdfIn PDF document text
- https://bodegoncriollo.com/userfiles/file/nokubilugovunodafafilexet.pdfIn PDF document text
- https://marathonroller.com/userfiles/files/40292170724.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076595cdc543---zuxepikogesefowexiz.pdfIn PDF document text
- https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/998b1412af998acaadbe1031fcde7154/xavomojazupapowibidak.pdfIn PDF document text
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/b5273816a4df0ce5a037c7aef0e18d03/rosukamurapo.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/9908b92aa06ca158241d0b264ccc593a/81125082277.pdfIn PDF document text
- https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa53d45612f---94095222727.pdfIn PDF document text
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b33e8cd8f7c---lotogajadimodujo.pdfIn PDF document text
- http://fritz-fahrlaender.ch/download/rofokemobitureziravos.pdfIn PDF document text
- http://biometria.pl/photos_fck/file/paluzumaxakivoxeresabifar.pdfIn PDF document text
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/b7l0gid71ir16p4ion04ipqcs3/gigej.pdfIn PDF document text
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/cv2e0du8o9dpkfndaqnkboopvs/xozakowijagefefuzesesu.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1d1442ad9---43131959408.pdfIn PDF document text
- http://poetische-malerei.de/web/editor/files/54611318780.pdfIn PDF document text
- http://10glazsikeyrosa.ru/file/zejexunolum.pdfIn PDF document text
- http://travelport.pl/userfiles//file/33046295951.pdfIn PDF document text
- http://udokutscher.de/gfx/userfiles/files/buremidujujesugazejo.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb08b57f0b9---61090116834.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=ejemplos+de+empresas+con+departamentalizacion+por+procesosPDF link annotation
- 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_off0000f913.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF913	17080 bytes
SHA-256: `45e6ecd75b3dfabe85956007a82819c36c3fdb2b43f220b160194397ea888d21`
`font_01_sfnt_off000123fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123FE	10848 bytes
SHA-256: `2126df6ae20e8f4c8b1256de882f8a1c0f2b437b7486a45e5a6e5b8e52f5884c`
`font_02_sfnt_off00013cfe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13CFE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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