PDF malware analysis — malicious · 0ccaceffb0b9378d

MALICIOUS

PDF

111.7 KB Created: 2021-09-19 19:19:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 3efea9fb39c6c6be30e290b0490e45b9 SHA-1: cf7f25ef3a13339a34769e9e14bb43fb916c6937 SHA-256: 0ccaceffb0b9378d4db889d5197aee16c41a7c0c64c00f5aa3ffd1f6e1dd16ba

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to domains that appear to be part of a link farm, as indicated by the PDF_SEO_DISPOSABLE_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic of using password-protected archives to bypass security scanners, implying a multi-stage attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

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
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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 https://laborke.ru/uplcv?utm_term=the+godfather+psp+iso PDF link annotation
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/gto1rmgtqrptcogicpk0ipkdi6/fubigarika.pdfIn PDF document text
- https://photopoligrafic.ru/ckfinder/userfiles/files/26809721984.pdfIn PDF document text
- https://vmgeducationtrust.org/home/vmgedu/public_html/public/userfiles/file/semitozagubi.pdfIn PDF document text
- https://guruamardaspublicschool.com/userfiles/files/mamobopenudajujuw.pdfIn PDF document text
- https://llbyggodesign.se/UserFiles/files/falavanozofite.pdfIn PDF document text
- http://dlabiura.kbo.pl/ckfinder/userfiles/files/54193521212.pdfIn PDF document text
- https://jss-moms.si/upload/File/33616954938.pdfIn PDF document text
- https://its-bulgaria.bg/files/file/kowunaseduveguveronunufen.pdfIn PDF document text
- https://idealist.ro/userfiles/file/39307318087.pdfIn PDF document text
- http://euro520.net/userfiles/file/16320436301356859195.pdfIn PDF document text
- http://reklamaopole.pl/userfiles/file/17515840232.pdfIn PDF document text
- http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/10804846965.pdfIn PDF document text
- http://ckpak.com/fckeditor/userfiles/file/kunonitijezojujizedodis.pdfIn PDF document text
- http://wib24-admin.de/uploads/file/27916506829.pdfIn PDF document text
- http://kuhomania.ru/ckfinder/userfiles/files/joxilelar.pdfIn PDF document text
- http://hacoauto.vn/upload/files/zotulimede.pdfIn PDF document text
- https://alquimia.in/admin/fckeditor/editorfile/paxefumopobebadapogafab.pdfIn PDF document text
- http://clinivetmadonnadirosa.eu/userfiles/files/78424252744.pdfIn PDF document text
- https://giaphutelecom.com/tctt/sites/aaa/file/livemomidujotuti.pdfIn PDF document text
- http://sevoir.hu/uploads/file/18850678494.pdfIn PDF document text
- https://alpinashop.rudy-ra.com/files/77260219281.pdfIn PDF document text
- http://itcck.org/upload/editor/file/zokarepesazi.pdfIn PDF document text
- http://asorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/58326652106.pdfIn PDF document text
- https://mytekas.com/UserFiles/file/xunofenew.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_off00014d30.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14D30	19704 bytes
SHA-256: `27f7009690fd0b2a08e5f9a3df3517cc40f0509a95e33aa0aa2def0ea4d583c6`
`font_01_sfnt_off00018101.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18101	10588 bytes
SHA-256: `f92973486f30f8b93b17b8b7e781cfdc7986cd71afec9b9103bd7f76efce0226`
`font_02_sfnt_off00019924.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19924	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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