PDF malware analysis — malicious · b6dca89eeb363bb4

MALICIOUS

PDF

83.4 KB Created: 2021-03-16 12:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dc07c7bf9c7b235609a4e4d13d455bbe SHA-1: e35a5b21de3811efeb2be2eefe3b473ec0fdfd5e SHA-256: b6dca89eeb363bb49e2e5e22968918a664b1f7add0dbb6f4056eec00379bc3b6

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URL pointing to 'nipisod.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate the document is designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://nipisod.ru/award?keyword=applied+bioelectricity+pdf
- http://rawufomoju.22web.org/dolby_digital_plus_profile_selector.pdf
- http://consumer-data-protection-bureau.com/rexigalegiwudupestiw35.pdf
- http://jerijoba.iblogger.org/heat_proof_sheet_for_roof_in_pakistan.pdf
- https://cdn-cms.f-static.net/uploads/4463785/normal_5fda7167eb8da.pdf
- http://gesetaxoxu.sportsontheweb.net/how_to_reset_samsung_galaxy_s6_back_to_factory_settings.pdf
- http://vulufinagi.mypressonline.com/69779200672.pdf
- https://cdn.sqhk.co/wanuvudeb/XhcQigf/vuzakidudarovuvosox.pdf
- http://pefiworawodud.mypressonline.com/zuvugepug.pdf
- http://domainlimax.xyz/shell_lubeanalyst_sensorsohyff.pdf
- https://static.s123-cdn-static.com/uploads/4375209/normal_5fdd33de981f2.pdf
- https://cdn-cms.f-static.net/uploads/4404285/normal_60373df5ba71f.pdf
- https://cdn.sqhk.co/valumikeg/Yjgixha/41798599914.pdf
- http://sokojutefame.iblogger.org/55498815469.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/purawuma/92537034947.pdf
- https://s3.amazonaws.com/fejakixoweka/kulixotumuwerexonubisawiv.pdf
- http://forolulazo.rf.gd/33970575485.pdf
- https://s3.amazonaws.com/napejaxosinages/contemplated_synonyms_and_antonyms.pdf
- http://wajodojizofe.epizy.com/meluzubakijezivakomigex.pdf
- https://s3.amazonaws.com/kovilowab/91990100581.pdf
- https://s3.amazonaws.com/dobikasukavu/algebra_2_worksheets_with_solutions.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_off00010b13.bin` `c3d62c6349cca595f2d5066e397b87602bcef204692a0e01dc61fb5fd03c383a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B13	4992 bytes
`font_01_sfnt_off00011c22.bin` `028f895b3e9ffcd4d98f3628762970ce5b50b4b80211aabb8f747a32039d244d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C22	10724 bytes

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