Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a091a5004ce7c63…

MALICIOUS

PDF

107.2 KB Created: 2021-04-25 00:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4e12511052133bddf35083d18e2d278 SHA-1: 7c4bcb2571d730f08ec119496df9f3651dca547a SHA-256: 0a091a5004ce7c63c873610e2356b3b581017fc0b6eb27a1162f5ae7f0270373
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of an advance-fee scam, presenting a fake CAPTCHA or verification prompt to trick users. It also contains an external URI pointing to a suspicious domain, likely intended to deliver a malicious payload or further engage the victim in the scam. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/strik?utm_term=wagner+control+pro+130+wont+prime
    • https://cdn.sqhk.co/zoxowowi/geBhiif/mawulaxe.pdf
    • https://cdn.sqhk.co/tivanosox/5FjbST6/devildark_the_fallen_kingdom_mod_apk.pdf
    • http://chategratis.online/polk_audio_12_inch_subwoofer_home_theater7b68b.pdf
    • http://omynutural.space/list_of_animals_and_their_sounds_in_tamildhsdd.pdf
    • https://dotofopig.weebly.com/uploads/1/3/4/3/134307416/komozi.pdf
    • http://ens-pictures.ru/33397170847gias0.pdf
    • https://cdn.sqhk.co/tidapavibu/ifrjajb/ccna_v6_packet_tracer_answers.pdf
    • https://cdn.sqhk.co/rawewosit/ijdeiax/44935931694.pdf
    • http://kefets.xyz/how_to_prime_a_hotsy_pressure_washerkvvgi.pdf
    • http://lavisil.22web.org/anfotericina_b_complexo_lipidico.pdf
    • http://bozidik.22web.org/chicken_biryani_recipe_in_marathi_download.pdf
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/4903327.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1923692e-f727-4f58-80a8-3583160180e3.filesusr.com/ugd/c4ccc4_58d2ff4ec1f547a78192c8fba93385a7.pdf?index=true
    • http://fenigubigona.epizy.com/reading_strategies_skimming_scanning.pdf
    • https://c09438b0-f1cf-4ade-afa2-d322e048c450.filesusr.com/ugd/313cc6_68c1c01aac1b47939201237330066e11.pdf?index=true
    • https://2863666b-9d79-467d-9aad-9eeb6dafbdf2.filesusr.com/ugd/6ee3eb_9dc907a66f76494bb1bda80208839859.pdf?index=true
    • http://mabazekow.epizy.com/diccionario_bblico_nelson.pdf
    • https://1237a3da-0b33-4890-9ba9-974507bf2590.filesusr.com/ugd/3e0cb9_d3b3c2e68f414f7eaed17877d4f99255.pdf?index=true
    • https://ef5e9b3f-1a8e-4c79-9b60-34b8f8133c96.filesusr.com/ugd/18574e_170c16fc2dd84209adcd250d36a89919.pdf?index=true
    • https://s3.amazonaws.com/xeroguru/excel_data_analysis_tool_regression.pdf
    • https://s3.amazonaws.com/subopukomanaw/cash_flow_statement_format_ind_as.pdf
    • https://s3.amazonaws.com/legapatatezisa/is_procreate_app_only_for_ipad_pro.pdf
    • http://bezixumupitutep.epizy.com/geberejibiwetami.pdf
    • https://s3.amazonaws.com/lixuduwonifa/bugzilla_linux_installation_guide.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014fd8.bin
a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FD8 6440 bytes
font_01_sfnt_off00015fcc.bin
8c211d1233a6f2485a889697857d6c9ba5ec8c0a7ecc9049d1dc6399b7438cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15FCC 5536 bytes
font_02_sfnt_off000172b9.bin
ebf515042f782a7e6a96214f2c1d313190d428eee0e352087c8e6fee3cae70cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x172B9 12548 bytes

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