PDF malware analysis — malicious · 2b4e468f79e2aecd

MALICIOUS

PDF

84.9 KB Created: 2021-09-04 09:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: c064a6ae92e86740a8002ae4b1e58b78 SHA-1: e179f707e98a495afb4e3db40cbd68fde51cf81d SHA-256: 2b4e468f79e2aecd6c15a658cedf95d6ffb30cdb780c81d21f6bed492166ed57

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The file also features numerous links pointing to external websites, many of which are hosted on compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution attempt. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9912

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/b770916fc0816f67a987cb4cbc32dafc/69002842377.pdf In PDF document text
- https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609ffebd6a56f---faxiterutanedak.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c3d84bc81---90220509909.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b3dca86db20---garuziwujinogowavubemado.pdfIn PDF document text
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/37gmflo3b04ptc6i75sdtf521v/najunovepu.pdfIn PDF document text
- https://ascinfratech.com/clientprojects/trading/file/10003061932.pdfIn PDF document text
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c0d384b8d---jofasetinumakuvepam.pdfIn PDF document text
- http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f67fa10726---24215071723.pdfIn PDF document text
- http://dblbtech.com/userfiles/file/74374152517.pdfIn PDF document text
- http://bukhatirhomes.com/userfiles/file/nalupubujomojenuf.pdfIn PDF document text
- https://mimpiindah1.com/contents//files/45577866905.pdfIn PDF document text
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/598a2aa66233763dfa98e8bd25263af5/87164265074.pdfIn PDF document text
- http://hagelkonzept.de/userfiles/file/47171370538.pdfIn PDF document text
- http://eventclub.pl/userfiles/file/85526140280.pdfIn PDF document text
- http://infrabud.eu/fckpliki/file/97274621216.pdfIn PDF document text
- https://doktor-ara.com/userfiles/files/zarujuwazusogubezabuja.pdfIn PDF document text
- http://dabbleanddesign.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/vifikibeseteli.pdfIn PDF document text
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/opv3omlj5ih7v7kdn351ggghi1/mememuribaruvigebevazo.pdfIn PDF document text
- https://camping-du-lac-dijon.com/userfiles/fichiers/wotifijuporatuwetojiv.pdfIn PDF document text
- http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/xenodaviluxi.pdfIn PDF document text
- https://alihuata.com/userfiles/file/18954580289.pdfIn PDF document text
- https://tidurmalam.com/contents//files/xanuje.pdfIn PDF document text
- https://www.tvmreza.tv/ckfinder/userfiles/files/10982277477.pdfIn PDF document text
- http://eia-edu.com/userfiles/file/48364607061.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/00acc8a8801c893820b7096183ac987b/71724832284.pdfIn PDF document text
- https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/qtc9qodomqeepcnbutam3oufb2/lelosudat.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=climaterio+pdf+2017PDF 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_off0000e043.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE043	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f85a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF85A	10764 bytes
SHA-256: `09aec077620525003cb380a49e1306e5fb40f1fceabc4836dcc9da03f02788ce`
`font_02_sfnt_off00011134.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11134	20132 bytes
SHA-256: `c907d5b446280e631bbd1cde3c54a457e4d28c7481ab0d221b8ed5e6305c901e`

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