PDF malware analysis — malicious · 3cad264e51ae54bc

MALICIOUS

PDF

78.4 KB Created: 2021-09-11 18:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 5b025158e6b9adeac7305362e3a6af41 SHA-1: dba736109d1a7158e08085e4144ae211cc4a9400 SHA-256: 3cad264e51ae54bcfa9d1a6b3504530542cb5abaad1285a44fa1845b9a7d6fd5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The PDF contains embedded JavaScript and multiple external URIs, indicating a malicious intent to redirect the user. The 'Cloud document impersonation lure' heuristic strongly suggests a phishing or credential harvesting attempt. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely serving as a downloader or phishing page.

Machine Learning

Nyx PDF Classifier malicious score 0.9968

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Cloud document impersonation lure medium SE_CLOUD_DOC_LURE

Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
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://archism.ru/uplcv?utm_term=how+to+send+video+to+email+from+android PDF link annotation
- https://egf.tw/test2/images/file/febepakasem.pdfIn PDF document text
- http://hifitness.hu/userfiles/file/soxuxaxeze.pdfIn PDF document text
- https://buddhaart.in/userfiles/file/wekupiduzejigopuwutadex.pdfIn PDF document text
- https://herfection.herfection.tw/upload/ckfinder_temp/files/20210907092102.pdfIn PDF document text
- http://zlzljc.com/uploadfile/file///2021090201485679.pdfIn PDF document text
- https://pensiuneaselina.ro/userfiles/file/wabunixifudo.pdfIn PDF document text
- https://texasbordervolunteers.org/userfiles/file/27272860984.pdfIn PDF document text
- http://mextro.de/upload/files/zepawegiwuduju.pdfIn PDF document text
- http://aczelzalog.hu/tmp/54315072167.pdfIn PDF document text
- https://www.agcontraincendios.es/ckfinder/userfiles/files/wegexeloripozemazeleje.pdfIn PDF document text
- http://encino.ilovepokebar.com/uploads/files/ditevo.pdfIn PDF document text
- http://ccadl.com/files/20210911154510.pdfIn PDF document text
- http://frickcontrols.com/uploads/files/sitifekuwo.pdfIn PDF document text
- https://www.sistemkabin.com/ckfinder/userfiles/files/lowonutexuxegosukumixoli.pdfIn PDF document text
- http://skmsm.com/userData/board/file/filaxup.pdfIn PDF document text
- http://noclegsosnowiec.pl/eurostyl/photos/file/5546379559.pdfIn PDF document text
- http://www.florentmaussion.net/userfiles/File/xobejosojorogofatodoseda.pdfIn PDF document text
- https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/a56e00ab225de90f3ae79b9061a9756a/50342192328.pdfIn PDF document text
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136f79da372b---nitoxipefanokolakinapipal.pdfIn PDF document text
- https://maggies-handmade.com/UserFiles/files/wixodu.pdfIn PDF document text
- https://imahima.xyz/js/ckfinder/userfiles/files/fejesuwutitosaworogujol.pdfIn PDF document text
- http://coaching-scolaire.net/userfiles/file/dipapigipiludinapa.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_off0000cee1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCEE1	17440 bytes
SHA-256: `9e0c2052ef320d686604133a04b0f7772ce63c39479612dc1eca92ee2d2899e8`
`font_01_sfnt_off0000fbd1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFBD1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000113e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x113E8	10656 bytes
SHA-256: `b1b61de09cd05a47a49435b4afef757affdf889b28c6a3f2ac936330790ba4f0`

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