PDF malware analysis — malicious · c9895267cfa0d919

MALICIOUS

PDF

77.8 KB Created: 2021-04-19 02:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6ac796004b4887e86a97e1a1636c6484 SHA-1: 11d61451ff7db9edbb924cfcd63df2a408072652 SHA-256: c9895267cfa0d91912cee5744d5f82efc967e017608c956adb8b260e308af21e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'jacksth.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to product comparison, aligning with phishing tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://jacksth.ru/strik?utm_term=moog+little+phatty+vs+sub+37
- https://cdn.sqhk.co/wafavalufa/jhzhhha/warriors_orochi_4_ultimate_gameplay.pdf
- http://lutawud.22web.org/certificationkits_ccna_lab_workbook.pdf
- https://cdn.sqhk.co/winogolelog/rjfNbha/6117839223.pdf
- http://shop-onlinediscount.xyz/gurotonobarefeboref6gxu.pdf
- http://d2-club.ru/mekixixobn2pl2.pdf
- https://static.s123-cdn-static.com/uploads/4474997/normal_60013cd8f0ba6.pdf
- http://bakavorun.getenjoyment.net/lafagapulatu.pdf
- https://cdn.sqhk.co/xurawupo/jbUCjcZ/dobobewed.pdf
- http://akillidestekbasvuruformu.online/livros_espritas_grtis_para_baixar3is04.pdf
- http://palupalukagu.mygamesonline.org/32902140975.pdf
- http://gobigs.space/krups_espresso_machine_988_manualnv75j.pdf
- https://cdn-cms.f-static.net/uploads/4464053/normal_601b802ab679c.pdf
- http://stavki.link/kenmore_116_vacuum_beltb2y3d.pdf
- https://cdn.sqhk.co/pesasotiro/KtrRhaz/lagojiwutexanon.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://xobeminal.atwebpages.com/pasojowifugazolagadedofe.pdf
- http://wutesejib.onlinewebshop.net/kaworadonovedevexunugale.pdf
- http://lopamosetumug.epizy.com/jekazunulevotododejexu.pdf
- http://pevuzimoba.rf.gd/gatexaxaxosuzi.pdf
- http://fevafimavot.epizy.com/cfa_level_2_books_free_download.pdf
- http://jufakoxageponuz.rf.gd/vtech_kidizoom_duo_camera_manual.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f203.bin` `13279cf5a61ccf820aebcb7eb24c0df3097d1fa7b9054d5123b9189a4f34ba3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF203	5536 bytes
`font_01_sfnt_off000104f6.bin` `dbacf02051150e6949b7de335d60bf7741d2c29dcbc36fbdaa6f1d6459bd1e07`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104F6	11016 bytes

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