PDF malware analysis — malicious · 727676c0441e1ff4

MALICIOUS

PDF

88.1 KB Created: 2021-06-28 21:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: d7d7577fefcc701dbd8ffff5d1dc9ed4 SHA-1: 966252185b673d0dcd4e17096699fb50628587c4 SHA-256: 727676c0441e1ff40ae61844e2e14286b4be1fdf398c28032e917368161feefc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories, suggesting an attempt to lure users to malicious content. The PDF's structure and the nature of the embedded links indicate a phishing or redirection attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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
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.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a7703dc6d25---73000460791.pdf In PDF document text
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087fea6256ba---vobowafotovulep.pdfIn PDF document text
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c695df80cf7---19137450055.pdfIn PDF document text
- http://cablexconsulting.com/Upload/file/geboperebebojixu.pdfIn PDF document text
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1608793d9a74d9---kaxaravize.pdfIn PDF document text
- https://zanhotel.ro/beficientconsultingFiles/file/tapivevulo.pdfIn PDF document text
- https://hogies.com/includes/template/uploads/file/16551884132.pdfIn PDF document text
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/bd158df0f08b487538ac6799401a2501/55460288423.pdfIn PDF document text
- http://firewheels.pe/userfiles/file/71079948557.pdfIn PDF document text
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3a6b5a6fd---lumog.pdfIn PDF document text
- https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/5o9aep85uej8papv48nl95ne5p/jixonegexovokemudu.pdfIn PDF document text
- https://driftwoodcc.com/userfiles/files/82105726201.pdfIn PDF document text
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608abee8489fe---74254407968.pdfIn PDF document text
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/rt20kclsepc05o28dlo6el4g40/24342395327.pdfIn PDF document text
- http://unipsyclinic.com/userfiles/file/20210624142024.pdfIn PDF document text
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/7ac45d3859743c8a36fcc3c1b631d34d/63093445471.pdfIn PDF document text
- https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/3b1bba9a550c60cbb46934c549982a3d/81821804014.pdfIn PDF document text
- https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/5fc12f38963dd34c3defc1119307ff78/40752614754.pdfIn PDF document text
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aec0b799e58---zuluj.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160821a088bc0e---jariwonelexuxanabejufabi.pdfIn PDF document text
- http://maility.pl_adresuserfiles/file/75247039493.pdfIn PDF document text
- http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202104300026306381.pdfIn PDF document text
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5e046540e---35149411197.pdfIn PDF document text
- https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/3098bbe255671acc04814f99605abef7/55666525534.pdfIn PDF document text
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/087c444863773990e6983b25b5cd8b08/polowobikurenawiguluj.pdfIn PDF document text
- https://cvconstructionsgoa.com/pharma/admin/userfiles/file/wodadiziwebunu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=joint+entrance+exam+2021PDF 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_off0000f244.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF244	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010a5b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A5B	10564 bytes
SHA-256: `037362567d23fe5b1abddf52e253f2e0ea6fcc66df932db99b2b57b7ec770100`
`font_02_sfnt_off00012290.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12290	18996 bytes
SHA-256: `dcf4d33f5a7c4e5a923d44e117ee6234ff6e8a741d322ca4977c02294e14c4c8`

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