PDF malware analysis — malicious · 8def3e502aaf4f78

MALICIOUS

PDF

75.5 KB Created: 2021-09-25 13:34:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 8ba04a7d5b61e54fa94ec209b8e13675 SHA-1: 7df7fd1d34efc186e1ede04cefb0155b449fed0e SHA-256: 8def3e502aaf4f786eea83e8756f16f27cd7cb093aaf06530a5e8aa6627bdaeb

176 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs forming a link farm, with several pointing to compromised WordPress sites or disposable hosting. The 'SE_QR_LURE' heuristic indicates the document may instruct users to scan a QR code, a common phishing tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9973

Heuristics 7

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.
QR-code redirect lure medium SE_QR_LURE

Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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=how+to+scan+qr+code+on+chrome+android PDF link annotation
- https://hotelmitrutarija.com/uploaded/files/60403816810.pdfIn PDF document text
- http://utcsp.rustyramone.com/uploads/files/kagabakezadotubaton.pdfIn PDF document text
- http://georgekoldun.com/var/upload/file/12875711560.pdfIn PDF document text
- http://myphamasia.net/upload/files/sarapitumaw.pdfIn PDF document text
- https://adesso-moosburg.de/images/file/76840662667.pdfIn PDF document text
- http://foto-klub.dk/userfiles/file/votuxapo.pdfIn PDF document text
- https://europartner2.pl/uploads/tesuraxemuveko.pdfIn PDF document text
- http://pinturasoltra.com/images/slider/files/ximakefogepebixawomunox.pdfIn PDF document text
- http://chandravanshi.com/userfiles/file/wubowawusotojejutipatav.pdfIn PDF document text
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132283fe7f8a---reravuzunipexura.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/pupuzofavosenagozofuter.pdfIn PDF document text
- http://beganijewellers.com/ckeditor/ckfinder/userfiles/files/92477884561.pdfIn PDF document text
- http://hichipper.com/hichipper/uploadfile/file/2021092106541673499.pdfIn PDF document text
- http://capitolmetrophysicaltherapy.com/files/files/86112007775.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d1f911d4fa---tiveluxabuzifarunifis.pdfIn PDF document text
- http://codemessaging.net/ckfinder/userfiles/files/4369531389.pdfIn PDF document text
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/alg4q3urq51iu2s6n4o0c8mqa7/kerowujowudomukorufew.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/xixasusojamidulugeluvovob.pdfIn PDF document text
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612fa670a05cd---timivora.pdfIn PDF document text
- https://chingchia.com/uploads/files/202109240601392745.pdfIn PDF document text
- https://togelunited4d.com/contents/files/vapubivemevumizenaro.pdfIn PDF document text
- https://wittnebel.dk/file/90033957620.pdfIn PDF document text
- https://ichibaninfotech.com/ckfinder/userfiles/files/29843054510.pdfIn PDF document text
- http://german-ex.com/images/blog/file/palenovakuxerapo.pdfIn PDF document text
- http://lovesushiscv.com/uploads/files/kagesilarodebufeboxitowaz.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_off0000bf2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF2C	10812 bytes
SHA-256: `0ed6039f22165dbff2419a0588b55087493d4178df9e5cd7cdb23e1d7309da9b`
`font_01_sfnt_off0000d7ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7BA	18656 bytes
SHA-256: `c5db39155dc3f522f77b90298ec61d40c8121712baad35f4682784d81dcbe78e`
`font_02_sfnt_off000107fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107FC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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