PDF malware analysis — malicious · f56eced641fa8229

MALICIOUS

PDF

92.2 KB Created: 2021-08-10 14:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 2c423605113ed74540964700f9aebeb2 SHA-1: 34a99a18c2baece10852bdffb4a68579d274eaad SHA-256: f56eced641fa82293a022f3c2e7b5d0a3023baeab49753ade9f937eec0371a0f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The file's structure and embedded URLs indicate it is likely used as a lure in a phishing campaign, potentially exploiting vulnerabilities to execute further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9876

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=comment+regrouper+plusieurs+fichiers+pdf+en+un+seul PDF link annotation
- http://mrbossamktown.com/uploads/files/xikujatuzisov.pdfIn PDF document text
- http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16207904608113.pdfIn PDF document text
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/a2010cbb0d04f48c79372b949d11db2f/fasebo.pdfIn PDF document text
- http://vejwun.cz/images/5899460401.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/79c1eafc405b70ddf695f0e2e2b7196f/4120165253.pdfIn PDF document text
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/m4jnjo3kqa6t5p3nc9dlahdv4p/nagogejubaxuvejuno.pdfIn PDF document text
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/9a3c7a8eb1dd1e220dfdec344b5cec13/sotikufaxabugavesem.pdfIn PDF document text
- http://phrabat.net/UserFiles/File/68773905895.pdfIn PDF document text
- http://ibiforstarlight.org/clients/3/3c/3cfcca4e360ca8807b7dd7d6e7cbeae0/File/zuzarotosekevaja.pdfIn PDF document text
- http://4bx.pl/public/file/48062470411.pdfIn PDF document text
- http://www.motionmantra.com/userfiles/files/sewerosewijemazagaxuj.pdfIn PDF document text
- https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/gdq9la1kptltkqdqgcbr9gnkv0/95491285891.pdfIn PDF document text
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609676aa3176c---50783479442.pdfIn PDF document text
- https://luyenthitoeic.info/userfiles/file/dedezun.pdfIn PDF document text
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a81241a662b---tebogevud.pdfIn PDF document text
- http://mashtalkandil.com/userfiles/file/31316172279.pdfIn PDF document text
- https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/6bf1ce61bed63d60da242de4cfe65d65/gabekunarawudixaliji.pdfIn PDF document text
- https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/b2aafbedf96e70267770e66fa0c6b011/81692383271.pdfIn PDF document text
- http://psychologkmalinowska.pl/ckfinder/userfiles/files/14188346004.pdfIn PDF document text
- http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/7r6g00c36ulv7htv1enlp4vlhm/88855204523.pdfIn PDF document text
- https://otartufo.com/ckfinder/tartufofiles/files/ruvofajukonorakoz.pdfIn PDF document text
- https://camgloberealtor.com/userfiles/file/77071155170.pdfIn PDF document text
- http://bilafafafa.com/shopadmin/upload/files/79865841892.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160838054ea69c---9630030147.pdfIn PDF document text
- http://apexnepaltravel.com/userfiles/file/13781825492.pdfIn PDF document text
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/tebtl4i1upo2l8aed1ph9t3jei/vowerebuzepelamevulomib.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_off0000fda3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDA3	19380 bytes
SHA-256: `f5c547418c00ed4f44e28c1063a9076b18684326554ae6b864b33274bd7d79b5`
`font_01_sfnt_off00012e34.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E34	11036 bytes
SHA-256: `e911fda2ee351b9a7558d097ecbbe5dd0cbea5290abc9c25cc69a711b61b84d8`
`font_02_sfnt_off00014777.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14777	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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