PDF malware analysis — malicious · 176ab20cd8d0fb7f

MALICIOUS

PDF

82.0 KB Created: 2021-09-02 11:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 65d1fd20e6674ee42e1469f7d1b13bf1 SHA-1: ad28b9968a3df821efaa84f6ff4e59479ff30772 SHA-256: 176ab20cd8d0fb7f07d8ec0b3b6a23b7dfeebcb281035e6047b2d479ce9d3a97

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution scheme. The PDF itself appears to be a link farm, likely intended to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://cimkezes.hu/uploads/ckfinder/userfiles/files/bimaguvabaxem.pdf In PDF document text
- http://rford67613.com/clients/a/a2/a20594cba7d6fe247bc87ef9b80620db/File/68107006617.pdfIn PDF document text
- https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/7e1a32b87578cf0b375f67a97a6e2727/negepeduriboxo.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078d1da15155---fugexolatitowivadolateto.pdfIn PDF document text
- http://rotarylaspalmas.orgdocumentos/file/25156094809.pdfIn PDF document text
- http://orosweb.hu/ckfinder/userfiles/files/65458645346.pdfIn PDF document text
- http://aiskreunion.com/clients/b/b4/b417c2091670ce0b0d78f4b231aea02c/File/pejivifime.pdfIn PDF document text
- http://cupta.org/userfiles/files/20210725180131.pdfIn PDF document text
- https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/4e4f8d3bd27931f9a088263c3f98d98a/burodowiwij.pdfIn PDF document text
- http://dopuskvsro.ru/UserFiles/37068501124.pdfIn PDF document text
- https://autotrans911.com/thread/admin/uploads/file/19390150534.pdfIn PDF document text
- http://sanruou.com/app/webroot/uploads/files/2301386937.pdfIn PDF document text
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b597dc0c41d---39053135950.pdfIn PDF document text
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161157cd843b36---nejafunubavafanifajewo.pdfIn PDF document text
- http://dmhu.eu/uploads/uplib/file/31912577603.pdfIn PDF document text
- http://bamila.vn/luutru/files/datetin.pdfIn PDF document text
- https://ppuhperspektywa.pl/files/edytor/file/4130918251.pdfIn PDF document text
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/msrltff0i8497946aei03cmq1f/47598009475.pdfIn PDF document text
- https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/400c5f0830a7fa0f7bc38014a18af768/roxavoduzetivinaviva.pdfIn PDF document text
- http://mygotour.com/FileData/ckfinder/files/20210708_6705147156B9119F.pdfIn PDF document text
- https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/7129bb44894a7fb8547faddb14748b35/busasag.pdfIn PDF document text
- http://booklandbooks.com/userfiles/file/jubanupu.pdfIn PDF document text
- https://www.larche-de-jules.fr/ckfinder/userfiles/files/tasusezufo.pdfIn PDF document text
- http://eko-inwest.eu/upload/file/17719914663.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=wagamama+menu+pdf+ukPDF 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_off0000db4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB4E	10400 bytes
SHA-256: `ab167959537802e2ccb3676c8ce63bb2f714ae6ea353d78fa82617b2f017ae7b`
`font_01_sfnt_off0000f298.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF298	18468 bytes
SHA-256: `cbdf8bc272f786f0aca697c8158815e0fcf4dac7be1b342767145340cc1fd22c`
`font_02_sfnt_off0001227b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1227B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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