Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5518e6b190a5173…

MALICIOUS

PDF

71.2 KB Created: 2021-03-20 07:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32269ecbf9d2938ea647f4a389c389b9 SHA-1: 3c4f637a3fada66fe0d4ab4f7a8f5ac220ff0703 SHA-256: b5518e6b190a5173727e18bcd6eb96f435134103cfc2f240d29cdd00ed424279
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, with a high risk score. It contains an embedded URI pointing to a URL that appears to be a search result for 'adobe keygen music', suggesting a phishing or malware distribution lure. While no scripts were directly extracted, the PDF structure and embedded URI indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/wix?keyword=adobe+keygen+music
    • https://cdn-cms.f-static.net/uploads/4369185/normal_60208d2218866.pdf
    • https://cdn-cms.f-static.net/uploads/4420238/normal_604f3888e3ecd.pdf
    • http://front-glass.space/char_broil_grill_temperature_gauge_not_workingauwbl.pdf
    • https://cdn.sqhk.co/remimidotomi/jihhUdT/2048_hacked_auto_run_unblocked.pdf
    • https://cdn.sqhk.co/vumuwilaj/6jiCxYH/download_brick_blast_ball_mod_apk.pdf
    • https://cdn.sqhk.co/fobonelaga/1JUoicg/idle_park_tycoon_dinosaur_mod_apk.pdf
    • https://cdn.sqhk.co/nogugojuri/njaxgcN/21999038283.pdf
    • http://ziximotizaned.medianewsonline.com/91668871439.pdf
    • http://fimewot.xyz/nutugunanigibuxazumepofijg3xy1.pdf
    • http://tihefers.online/94350059234rupu9.pdf
    • https://cdn.sqhk.co/sasibasodiwu/Ahjhcgj/kemetonenotogu.pdf
    • https://cdn-cms.f-static.net/uploads/4419650/normal_6050d158a888e.pdf
    • http://copyrightsupportforlnstagram.com/mukivumamomez76dp.pdf
    • http://bukapim.mywebcommunity.org/java_tutorial_point_free_download.pdf
    • https://cdn.sqhk.co/mudinaxape/Mu7sgie/sudoku_solver_6x6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pipaneku/un_mundo_feliz_aldous_huxley_frases.pdf
    • https://s3.amazonaws.com/limewub/bukidnon_tribe.pdf
    • https://s3.amazonaws.com/verirejon/privacy_engineering_for_system_life_cycle_processes.pdf
    • https://s3.amazonaws.com/xoxaneral/captive_portal_for_android_hotspot.pdf
    • https://s3.amazonaws.com/nuruvapozixix/current_tax_asset_in_balance_sheet.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_off0000d820.bin
eb58aba2c3c381df1e3b3f49c640dba70453b2cd91fc1522f1e9fe10f6bf12e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD820 5216 bytes
font_01_sfnt_off0000e9e6.bin
189a2f9a79bea96e0183bf77a5682700c8fd71ee64dd4547f801bd1a3ca7f32e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 11208 bytes