Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d40d7c69a827bf9…

MALICIOUS

PDF

69.9 KB Created: 2021-03-19 19:50:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7417c9412c79ab58cf1b809a85c623a9 SHA-1: eb028f3befbe33dc431a600af15052dbc6dff5db SHA-256: 3d40d7c69a827bf9c38b52e2a1a97a12dde5363c738ebaed563a2e1f25f37a0b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'soxebez.ru', which is likely used to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into visiting a compromised or malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/strik?utm_term=how+to+update+statistics+of+a+table+in+sql+server
    • https://cdn.sqhk.co/vuzefoveniri/YDsPAYW/gulatigijex.pdf
    • https://cdn.sqhk.co/tuwesedujila/ssX9geL/7376578512.pdf
    • https://cdn.sqhk.co/kakumipoman/jgH7K4W/livinezebaruzu.pdf
    • http://f1l3download.site/63666965033xj4p9.pdf
    • https://cdn.sqhk.co/zunesunatiri/icYS4Z8/cruiseaway_by_dreamlines_australia.pdf
    • https://cdn.sqhk.co/girewobo/010hihe/panzer_corps_mission_tree.pdf
    • http://meetdouche.xyz/792517857122dunp.pdf
    • https://cdn.sqhk.co/lizuloka/i6Hid9q/aalayal_thara_venam_remix_song.pdf
    • https://cdn.sqhk.co/lobinazema/jcYVjhe/autotune_for_voicemod.pdf
    • https://cdn.sqhk.co/panajevem/Chfgjcx/baggage_claim_full_movie.pdf
    • http://peuer.xyz/64538897795hv7n9.pdf
    • https://cdn.sqhk.co/banuluwopote/f2ticDH/83398617393.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ad5c541f-a4a1-4837-a531-a82c07741c41/19976099562.pdf
    • https://s3.amazonaws.com/vavale/ranin.pdf
    • https://uploads.strikinglycdn.com/files/bfa1e2c1-d63d-4565-93aa-c99ed60b7706/12184645586.pdf
    • https://uploads.strikinglycdn.com/files/a0441696-eb74-415c-8af3-057259cc8bd1/jakedivexegazapatagun.pdf
    • https://uploads.strikinglycdn.com/files/63d5e83a-573a-4db9-b030-7b048daae7df/coleman_spa_manual.pdf
    • https://uploads.strikinglycdn.com/files/1c2bf2e1-85c2-4c1a-922e-5bbdc98b7aba/why_should_you_follow_school_rules.pdf
    • https://uploads.strikinglycdn.com/files/c13ff12d-407c-4c18-a157-9b13444084ec/how_to_remove_a_salt_chlorinator_cell.pdf
    • https://s3.amazonaws.com/tikofaketonub/toshiba_fire_tv_remote_not_working.pdf
    • https://s3.amazonaws.com/wiwamoxamo/grammar_practice_high_school_worksheets.pdf
    • https://uploads.strikinglycdn.com/files/c910695f-abc9-46c7-aa34-b440a6b79be5/what_happened_with_fox_news.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.

FilenameKindSourceSize
font_00_sfnt_off0000d1b1.bin
742a2c496b0ef61338d0ae682c712863ddfee9f70dca329a1af2610a4acd436e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B1 5528 bytes
font_01_sfnt_off0000e49e.bin
dd967b8a297dba90f8216e9b8271273c974e754e3e305059b67ea4a5edc2455c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE49E 11020 bytes

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