Malicious PDF — malware analysis report

Static analysis result for SHA-256 71ce6fba522cd4b2…

MALICIOUS

PDF

75.8 KB Created: 2021-04-18 09:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96d0dd7a3e8aaf7d2c98cda026a79f7e SHA-1: 023fd7cf5224313135aae9b137faafc3ec0784d4 SHA-256: 71ce6fba522cd4b29c80fadf386007e09fcd2ab46bf44736a12da47a75acefa0
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://xezojetit.ru/strik?utm_term=are+door+bouncers+bad+for+babies` is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely as part of a spearphishing campaign.

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://xezojetit.ru/strik?utm_term=are+door+bouncers+bad+for+babies
    • https://rilemiwekeb.weebly.com/uploads/1/3/4/5/134599700/gudadenodidov.pdf
    • https://xajerunufunofe.weebly.com/uploads/1/3/1/3/131378991/fovamuwep-tavorirunikuz-puvex-jenadapul.pdf
    • http://neojust.ru/sat_subject_test_dates_canadak7ulc.pdf
    • https://vemowidododujev.weebly.com/uploads/1/3/4/3/134353566/6594635.pdf
    • http://termo-nord.tech/how_to_reset_a_whirlpool_dishwasher4e80a.pdf
    • https://wevetajapejo.weebly.com/uploads/1/3/4/6/134636724/a816dee597e6.pdf
    • http://dusibarupuguli.medianewsonline.com/bumoroxatupunenup.pdf
    • https://tepogixe.weebly.com/uploads/1/3/1/4/131437844/vapuv.pdf
    • http://lobabinuladeri.medianewsonline.com/naligibarubuvopatejilim.pdf
    • https://lumewogomor.weebly.com/uploads/1/3/4/3/134319436/zosovimu_febuxinajufuz_vadufawupilufo_wineso.pdf
    • http://wonnaturila.space/dota_2_guide_indonesia_slardarkk51y.pdf
    • http://befujukipepejem.mygamesonline.org/aptitude_test_with_answers.pdf
    • https://tofudilasikota.weebly.com/uploads/1/3/0/9/130969343/613964.pdf
    • http://vakiduweg.mygamesonline.org/materi_akuntansi_perusahaan_jasa_kurikulum_2020.pdf
    • http://allwoman.site/33820346613e4e4o.pdf
    • https://bozelisu.weebly.com/uploads/1/3/2/6/132695328/juravujowonil-mekobotakavep-letuj-mixufega.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vavale/peter_pan_and_wendy_movie_2020.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/how_to_pass_algebra_1_test.pdf
    • https://s3.amazonaws.com/zerejibixupav/cdc_vis_sheets_hpv9.pdf
    • https://s3.amazonaws.com/juvetaso/aflatoon_film_songs.pdf
    • https://s3.amazonaws.com/zemigiduwagafu/55885575274.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_off0000eb2f.bin
d6440b87398a3a430109b03391edf1f40b63cad3361e27d379e974724951324b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2F 5112 bytes
font_01_sfnt_off0000fca3.bin
9575a3736dba68a4906a4eed5de4775afdf5a9db9213f122b79fa6a0783de084
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA3 10872 bytes