Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5385c9c26057a4…

MALICIOUS

PDF

78.4 KB Created: 2021-02-20 01:17:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7f7da2e33a07f015ce9b3ce26a0dd128 SHA-1: f1e650a8617f815459775957d2944b97b3368279 SHA-256: 2a5385c9c26057a44aa6ef84056f3f6f06b6ccfc2bc3a5f8d6ab19e2fa3b2f5e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV and ML classifiers as malicious. The document body, though heavily obfuscated, contains strings that appear to be related to the lure. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download further payloads.

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://leonvi.ru/wix?keyword=rey+arturo+netflix PDF link annotation
    • https://cdn.sqhk.co/sifalavuxozo/dhieYhj/sivebijovax.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/tihyhda/80511678776.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/ijHghhg/full_contact_teams_racing_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411500/normal_5fe86b5e36149.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501380/normal_5fe30a83ab1b4.pdfIn PDF document text
    • http://begemot.space/the_green_mile_book_quotesxssr5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416326/normal_6008d4b71ab68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382413/normal_6006925eaceb1.pdfIn PDF document text
    • http://remont-pc.website/parallel_multiple_account_apkc9ix7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/descargar_totally_accurate_battle_simulator_para_android.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/whatsapp_transparent_latest_version_apk.pdfIn PDF document text
    • http://lomurobutu.epizy.com/jurassic_park_builder_hack_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/cefr_in_malaysia.pdfIn PDF document text
    • http://pinukemedorurol.rf.gd/sojinoto.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/project_communication_plan_template_excel_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/xunaderuk.pdfIn PDF document text
    • http://varulorafa.epizy.com/78587020888.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/weekly_fishing_report_michigan.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/52956648598.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF824 4760 bytes
SHA-256: 7fc8d622dddf26814dbf8beb5032be7a5ddf73662242ebd82de3737bb3013c0a
font_01_sfnt_off00010876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10876 10476 bytes
SHA-256: 5824b8bb83a8e9d872bcbf742b187b1975a0cd1d3d3d554e84b7f7d7a6b49f3f

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