PDF malware analysis — malicious · bede98d92c0fd31d

MALICIOUS

PDF

85.6 KB Created: 2021-06-29 22:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 6ccc2c39b2340fb100ce47f18d8e28c7 SHA-1: bbf0c64039ae9fa919eedf82ade9b851816972c8 SHA-256: bede98d92c0fd31d27427eaa1343da3f4afe8476ee6e915873533cef8ce62dfa

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to compromised WordPress upload directories, suggesting it is used to distribute further malicious content. The presence of multiple distinct hosts and URLs indicates a broad distribution effort, likely initiated via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b2257dee4cd---2980600277.pdf In PDF document text
- https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/91v4up1in2c6dvdal4d9el3js0/44920057229.pdfIn PDF document text
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/72mn076l924upcbn5k6vqkhhvb/xorutewemabamasofewez.pdfIn PDF document text
- http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd7950b77c---22026328800.pdfIn PDF document text
- https://divinesacredshakti.com/wp-content/plugins/super-forms/uploads/php/files/cca79ca8b68359bf0750c24e9bf2b40b/sajelofo.pdfIn PDF document text
- http://111-orte.de/testarea/cwsCMSlight/media/files/30503696737.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf43ceec8---83983915153.pdfIn PDF document text
- http://dzbnf.com/upload/file///71100554602.pdfIn PDF document text
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a869ee4a01a---nonitunufujewunajukolore.pdfIn PDF document text
- http://anandtouristcorporation.com/uploads/57140765757.pdfIn PDF document text
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/vj2q90k5otfesb3gl11db2ocsq/ponenajizaxiweledodirope.pdfIn PDF document text
- http://cosonhuath.com/hinhanh_fckeditor/file/fotizebadanasevadoz.pdfIn PDF document text
- http://alexlunacoach.com/img/editor/file/tuferutitib.pdfIn PDF document text
- https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/54f86d92305196a8594736671816868e/28360153887.pdfIn PDF document text
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801ecf1b588---27175915485.pdfIn PDF document text
- https://geneolock.com/locktactyuma/userfiles/file/45463578929.pdfIn PDF document text
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607978f8449be---5204104343.pdfIn PDF document text
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e7d448475---kutor.pdfIn PDF document text
- https://adepotcustom.com/UploadFiles/file/20210427215103119.pdfIn PDF document text
- https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/29794519577646dd999723e0451dc742/60277518760.pdfIn PDF document text
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/f6k5puiu5fde9d0g9f10srui1l/gewojipugufevuni.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acd107ecbc8---2137736743.pdfIn PDF document text
- https://tsafar.ir/basefile/tsafarir/files/20450862848.pdfIn PDF document text
- http://dochoiotovn.com/uploads/userfiles/file/pajot.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=british+association+for+american+studiesPDF 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_off0000ea5a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA5A	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010271.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10271	10848 bytes
SHA-256: `befcf78c2f334386048e12f46d0e991d4b7f8ce27c9e5d58cec7703ec873f470`
`font_02_sfnt_off00011b55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B55	17756 bytes
SHA-256: `80ccfa33cbf84d0186eae59fcf974a6231b045ceef89c5aed909acaf8b5d0851`

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