PDF malware analysis — malicious · decd4486a3deee9d

MALICIOUS

PDF

77.3 KB Created: 2021-09-04 22:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 0478acb8211fd099d630e962eb3e5fa8 SHA-1: c7da9b95baeeb26d72b45e6231b02dce4a600f20 SHA-256: decd4486a3deee9d3d38498bd9c41fc863c5e107c4bf9adf934dcc00bd49139a

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. It contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The PDF structure and embedded URLs indicate an attempt to lure users to potentially malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9943

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://kondicionery-fryazino.ru/upload_picture/file/nisem.pdf In PDF document text
- http://www.kickcommerce.com/userfiles/file/sujiromeze.pdfIn PDF document text
- http://unipsyclinic.com/userfiles/file/20210603014642.pdfIn PDF document text
- https://mallorcaboom.com/res/wysiwyg/file/sisijulibolesuxiwimogena.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160805a3459b71---wagoroguzejapi.pdfIn PDF document text
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/sl82f8r4u0bh0u1i97jk54edj6/lutuvux.pdfIn PDF document text
- http://mt-filtration.com/uploaded/file/1247568732611c4ff45aac8.pdfIn PDF document text
- https://coil.hk/upload/files/23744312054.pdfIn PDF document text
- http://manisafar.com/basefile/marcosafarir/files/11545500326.pdfIn PDF document text
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160db94271f809---31416300039.pdfIn PDF document text
- https://sasalidayanisma.org/uploads/file/80464084992.pdfIn PDF document text
- http://sshs61.com/clients/6/60/60e739d5a8cf4a6710e4f064fd99417d/File/lovoxobunarujanudegeda.pdfIn PDF document text
- https://mzlpro.com/web/img/podborky/files/35007584166.pdfIn PDF document text
- http://netinflux.net/userfiles/file/temij.pdfIn PDF document text
- https://digireg.pl/upload/pitanopeta.pdfIn PDF document text
- https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160fb150fc63a4---65621806203.pdfIn PDF document text
- http://cathugo-yachts.de/res/wysiwyg/file/86292091430.pdfIn PDF document text
- http://alkimosgb.com/userfiles/files/88962242100.pdfIn PDF document text
- https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/d057bd6f6cce4f1064463df3e7a29f42/85652512204.pdfIn PDF document text
- http://lifecare4all.com/upload/files/10500059859.pdfIn PDF document text
- http://vtaky.sk/media/file/nawanopinaluzof.pdfIn PDF document text
- http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/wasowozakebiz.pdfIn PDF document text
- https://www.clinicaepilepsia.cl/ckfinder/userfiles/files/medezofadapaladade.pdfIn PDF document text
- http://1960vonsteuben.com/clients/d/df/dfb5e1b83ea85bfdc5ef1da934264264/File/titirufezemopogunuk.pdfIn PDF document text
- https://accuratesearch.com/userfiles/file/70772262952.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=grammar+stories+pdfPDF 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_off0000ca14.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA14	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e22b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE22B	10548 bytes
SHA-256: `b23cfad50fae7daa2eaa638ff8c520d3d6dd1b11d7a1eed35ed69d5a75346c48`
`font_02_sfnt_off0000fa42.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA42	17780 bytes
SHA-256: `37c600d7c3a3181819e6ae458599b3707c88a95b5f9a0948d6803691d92ec4fc`

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