PDF malware analysis — malicious · 0c58120579f2c406

MALICIOUS

PDF

82.7 KB Created: 2021-09-10 16:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: b4e3740657ac83185a30293b9b407262 SHA-1: 0fe06bc54a3b144ea89171e8142063b694b58bad SHA-256: 0c58120579f2c406cd574cafd37e55535d98008cb6baec37f438f8024612de0f

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, indicating malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document's purpose is to host a large number of links on disposable domains, likely for SEO manipulation or to serve as a distribution point for other malicious content. The ML classifier and ClamAV detection further support its malicious nature.

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
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://drafthe.ru/uplcv?utm_term=haircuts+to+make+your+face+look+smaller PDF link annotation
- http://parkety-patemal.sk/files/file/50813372468.pdfIn PDF document text
- http://reclameindex.nl/images/uploads/nokipazupenifeku.pdfIn PDF document text
- http://88cpap.com/userfiles/files/nukebonor.pdfIn PDF document text
- https://concertwristband.com/resimler/files/vedetobamebif.pdfIn PDF document text
- http://terezmisszio.eu/files/file/xoxilakuzuwesipebidira.pdfIn PDF document text
- http://brava-ekb.ru/userfiles/file/dibesobezepimataj.pdfIn PDF document text
- http://fotografieindex.nl/images/uploads/21980563687.pdfIn PDF document text
- http://whatifitspossible.com/ckfinder/userfiles/files/30403670251.pdfIn PDF document text
- https://epgeptech.hu/ckfinder/userfiles/files/nakopugowi.pdfIn PDF document text
- http://simsvizag.com/contentimages/file/38381593060.pdfIn PDF document text
- https://marblo.ph/app/webroot/img/files/vosibatufikeji.pdfIn PDF document text
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613132b8548d2---geravigifuximusosudiveso.pdfIn PDF document text
- http://wxdyzs.com/userfiles/files/87134585533.pdfIn PDF document text
- http://adimhukuk.com/resimler/files/zumelumek.pdfIn PDF document text
- https://onsale.social-push.cc/data/fckeditor/files/solomokofomiva.pdfIn PDF document text
- https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/xupow.pdfIn PDF document text
- https://alubiasdetolosa.com/files/galeria/files/vaginedub.pdfIn PDF document text
- http://scuderia512.com/js/upload/files/takijovarurowalibom.pdfIn PDF document text
- https://moderator.lt/components/com_mijoshop/opencart/image/data/files/ratuvagodukupudijamulala.pdfIn PDF document text
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/0cb4c8f947c8ce9d358ffd9999840290/98085259824.pdfIn PDF document text
- http://honderhotel.com/UploadFiles/FCKeditor/20210904072023.pdfIn PDF document text
- https://bgg.pirkitpadangas.lt/ckfinder/userfiles/files/tupixedusufumobesisaw.pdfIn PDF document text
- http://kehlux.lu/userfiles/files/fomowowuzulozesinexox.pdfIn PDF document text
- http://italianopizzeria-pg.com/uploads/files/25116194715.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_off0000dde8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDE8	10688 bytes
SHA-256: `661c0d5fe633f49c2d6e7c0f925913d6e4efe68ff8b8609d8cbc3ba43cb7d904`
`font_01_sfnt_off0000f67f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF67F	17972 bytes
SHA-256: `30eb98381c70d96d4eb0afb2f45dfea7cac33b369444d6ecd290e5c2246fb1f3`
`font_02_sfnt_off000124fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x124FA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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