Malicious PDF — malware analysis report

Static analysis result for SHA-256 c463d96c1def98af…

MALICIOUS

PDF

156.4 KB Created: 2021-03-22 05:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d56e8b83b8494b7e173d6c4092d7d213 SHA-1: 58480823f8d7ec6f10b375809fa8b7c30d3de19f SHA-256: c463d96c1def98af6d5d5610c052db0c85e0252b8346d039a41904b997047e70
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, some of which are flagged as unknown or potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of multiple download links suggests an attempt to trick the user into downloading further malicious content.

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://cdn.sqhk.co/mumeriretepi/ibgdohL/pokemon_master_quest_johto_game_download.pdf
    • http://ladyso.ru/oster_5838_58-minute_expressbake_breadmaker_manual9c0u2.pdf
    • https://cdn.sqhk.co/jakufomego/jiijjbB/2563123559.pdf
    • http://wonder-ita.fun/nier_automata_title_screen76vn7.pdf
    • https://cdn.sqhk.co/widafopaj/IUhgicN/deletopejosivakaresog.pdf
    • http://sfhgfje5df.xyz/320333524eopfd.pdf
    • http://sale20.site/pathfinder_2nd_edition_players_handbook7yfib.pdf
    • https://cdn.sqhk.co/vagekasip/aFjdxQj/96441593348.pdf
    • https://cdn.sqhk.co/tamupoto/aMg5gjw/stickman_hook_pc_download.pdf
    • http://winewelimefavo.iblogger.org/2442471104.pdf
    • http://matrixbicycles.com/motivational_speeches_about_lifequ10p.pdf
    • http://jolujunutido.iblogger.org/medireseburosu.pdf
    • http://intereriia.com/wawonanegefadexebijodegoe1jt3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/mO-5lVq97NI/wb?keyword=ezra%20pound%20cantos%20pdf%20english
    • http://jijetebum.epizy.com/52773080339.pdf
    • http://jategemi.epizy.com/calendar_template_psd_2019.pdf
    • http://dukizovisepo.rf.gd/bujidixepage.pdf
    • http://pudusibojekajip.rf.gd/zamon.pdf
    • http://vubibejibujala.rf.gd/elastic_collision_in_two_dimension_derivation.pdf
    • http://fozovevozasox.epizy.com/fasikoloxitudegukopemibu.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_off000227eb.bin
1c24113d3c1e3fe416e07eff947984655bf05dd2985f8cf43d7e26e3396ba517		 pdf-font-stream PDF embedded font (sfnt) at offset 0x227EB 5424 bytes
font_01_sfnt_off00023a61.bin
afa680c720a9ee4de7775334224d1c33ef3058e7def837aafef2bd59cd095d10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A61 12296 bytes

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