PDF malware analysis — malicious · 8c600458c8d148f6

MALICIOUS

PDF

76.5 KB Created: 2021-09-14 01:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 433ca46908c063f0061318f9af4c3239 SHA-1: 5c688a0af53c8a6f0dd585c686fb87f83dcbe15c SHA-256: 8c600458c8d148f6f9fbcda0e0697325066988996f1126826dee7e89b9f86e97

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains embedded JavaScript and numerous external URIs, including one pointing to 'irlanc.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using many distinct hosts with minimal links per host, suggesting an attempt to obscure the true malicious destination. The embedded JavaScript likely facilitates the redirection to these external sites, which are commonly used for phishing or distributing further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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
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://irlanc.ru/uplcv?utm_term=igo+nextgen+truck+android PDF link annotation
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa08e1ab35---beporokukivi.pdfIn PDF document text
- http://qhchemicalsfeed.com/upload/files/74376352525.pdfIn PDF document text
- http://findusafranchise.com/files/files/62302233948.pdfIn PDF document text
- http://icltindia.in/userfiles/file/liluzopi.pdfIn PDF document text
- http://euromarkcreations.com/new/fck_img/file/vovopiwiwakakufikemesonog.pdfIn PDF document text
- http://lt101shop.com/userfiles/files/86967692678.pdfIn PDF document text
- http://hoangminhsaigon.vn/@dmin/js/ckfinder/userfiles/files/30157297608.pdfIn PDF document text
- http://kancelaria-perfect.pl/app/webroot/media/files/74130506034.pdfIn PDF document text
- https://austdoorcaocap.com/upload/files/sulilifudoxifosijuw.pdfIn PDF document text
- http://lamorenj.com/userfiles/file/74910507965.pdfIn PDF document text
- https://fullhousetourism.com/UploadFiles/file/20210903190136177.pdfIn PDF document text
- https://silatur.com/js/ckfinder/userfiles/files/90754642598.pdfIn PDF document text
- http://palmdale.thepokeluau.com/uploads/files/37363731736.pdfIn PDF document text
- http://madinaboys.com/easydo%20v2.00/files/uploads/70720959029.pdfIn PDF document text
- http://tcihk.com/userfiles/lopufodolikixemapamoj.pdfIn PDF document text
- http://chocoenglish.com/_UploadFile/Images/file/kebexi.pdfIn PDF document text
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3216a733---92974102540.pdfIn PDF document text
- http://dtmaso.com/public_html/Imagens/file/fuwasabukidojowa.pdfIn PDF document text
- http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/komesew.pdfIn PDF document text
- https://kabelkyaobuv.sk/editor_uploads/files/42307997844.pdfIn PDF document text
- http://nesemlak.com/test/images/uploads/files/82862210453.pdfIn PDF document text
- http://xedaptap.net/userfiles/file/zamodowi.pdfIn PDF document text
- https://www.aukuras.org/ckfinder/userfiles/files/fiwerimovu.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_off0000c413.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC413	18720 bytes
SHA-256: `fe7a34fdca51e7ad2a236a91a8816906b19cfdeb5512f70dda3848e8440203b7`
`font_01_sfnt_off0000f494.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF494	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00010cab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CAB	10576 bytes
SHA-256: `ff69efebff4da700b3a2a76e4d626b4b140c9f5c8b2f57e67d3cde7babc39fe3`

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