Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf00d95571bb585…

MALICIOUS

PDF

78.1 KB Created: 2021-05-15 19:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61437139c18aba4d9772bd74e394dcdc SHA-1: 5faafd12a2290112dc776b9af2750db76c67f88d SHA-256: 8bf00d95571bb5859c217f51bf8d138000b670e01255b28d9f34fc5b175ca64d
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, several of which are flagged as unknown or potentially malicious, suggesting a phishing or credential harvesting attempt. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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 http://idealica-official-it.website/fructosamine_hba1c_conversion_chartn7xev.pdf
    • https://cdn-cms.f-static.net/uploads/4413982/normal_6013078ebf6ae.pdf
    • https://cdn.sqhk.co/jarixizotib/givhfhh/completely_free_dating_sites_for_seniors.pdf
    • https://cdn.sqhk.co/gixezovof/WakbSii/cubic_2_3_4_player_games_download.pdf
    • https://cdn.sqhk.co/mujekesire/d5Eifgd/scorpion_robot_monster_truck_transform_robot_games.pdf
    • http://clientbluebadge.com/start_up_business_budget_templatecd3hh.pdf
    • http://depalowivejal.iblogger.org/50126728568.pdf
    • https://cdn-cms.f-static.net/uploads/4484143/normal_6011c5e7b0901.pdf
    • https://cdn.sqhk.co/zasemewiti/eJKK91t/microsoft_stream_change_video_permissions.pdf
    • https://cdn.sqhk.co/talexadu/jbPijhg/griselda_blanco_sons_alive.pdf
    • https://cdn-cms.f-static.net/uploads/4380876/normal_6021085f3421b.pdf
    • http://naturalik.fun/putesajotexezotizahgsa4.pdf
    • https://cdn.sqhk.co/mepofazobi/bTgdkkm/chu_chu_tv_cartoon_free.pdf
    • https://cdn-cms.f-static.net/uploads/4481162/normal_5fe6885c1ec3f.pdf
    • https://cdn.sqhk.co/noxuluni/hiFgdhd/32724714426.pdf
    • http://bluebadgeform.com/star_wars_space_ships8auim.pdf
    • https://cdn.sqhk.co/betewulo/jgbhhaE/parorakumolil.pdf
    • http://emmetrix.net/company_core_data_sheet_ccds_templatekyqxm.pdf
    • https://cdn.sqhk.co/bisidilit/d6ieoGE/megabus_houston_to_fort_worth.pdf
    • https://cdn.sqhk.co/joxesinejag/hdhisqu/dune_kennings_surfer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/3IgsHNHpEfs/wb?keyword=important%20characters%20in%20romeo%20and%20juliet%20act%201
    • http://xizokokov.epizy.com/zanamigomap.pdf
    • https://s3.amazonaws.com/lukepepe/xalakuxomokunugevaros.pdf
    • https://s3.amazonaws.com/dorobukasawituw/is_mechanical_engineering_a_good_career_in_pakistan.pdf
    • http://pitefabe.epizy.com/numerologia_tantrica_libro_gratis.pdf
    • https://s3.amazonaws.com/zamemigojat/xetubuje.pdf
    • https://s3.amazonaws.com/viboxikuz/munalupimovizonuv.pdf
    • https://s3.amazonaws.com/xafaxotaful/porinam_bangla_movie_video_songs.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_off0000f43f.bin
5c762931eba98ea0c21c5170e2bd4a568af8e9f59ef0495d82bcd5c1442a087d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF43F 5376 bytes
font_01_sfnt_off0001065a.bin
95f8bbbeeb4be355899f6a37ea3b903b562ea65d4bb5bfe11743637eab1dab37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1065A 10452 bytes

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