Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9cad2e494b092fe…

MALICIOUS

PDF

76.7 KB Created: 2021-02-20 23:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57129f25a55cbba90530daa1ef6d4983 SHA-1: ec9cd8bce144306917a9eba3eae2fccf075474a3 SHA-256: c9cad2e494b092fe479affd648d1bfed1b77677e5bf3061097474703ed7574ed
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a heuristic indicating an external URI and a visual download button lure, suggesting a phishing attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this. The embedded URL 'https://leonvi.ru/wix?keyword=megabox+hd+mod+apk+download' is likely a lure to download a malicious payload, which is then likely executed.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/wix?keyword=megabox+hd+mod+apk+download
    • http://virnet77.ru/mariruzagusabwryzf.pdf
    • https://cdn.sqhk.co/pixazizaze/bgchcie/24192738427.pdf
    • https://cdn.sqhk.co/tizudukokeni/RSAhia9/reaper_pickaxe_2020.pdf
    • http://trokot-shtorki.online/a_manual_for_living_epictetus_free_downloadtjyx0.pdf
    • http://trokot-shopnew.online/sandhyavandanam_yajur_veda_tamil1yhf3.pdf
    • http://shopwithsale.website/auto_send_sms_app_androida6u3c.pdf
    • https://cdn-cms.f-static.net/uploads/4378153/normal_60211554274b1.pdf
    • http://eferevole.com/mamokeruvemotaniwumosassyf6v.pdf
    • http://microdigitalmeter.xyz/6572335420iml0s.pdf
    • http://universal-kirov.ru/zojexevotowamosewawabipv79i.pdf
    • http://klyshsheff.xyz/68496464390yjzs3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lizuseguwix/sires.pdf
    • https://s3.amazonaws.com/luramamelolem/how_to_set_up_fleck_5600sxt.pdf
    • https://s3.amazonaws.com/sesijesule/google_sheets_custom_function_not_updating.pdf
    • https://s3.amazonaws.com/xukirizugukugi/senujesikoji.pdf
    • https://s3.amazonaws.com/wixatax/88972301255.pdf
    • https://s3.amazonaws.com/sorogamat/zigujenuz.pdf
    • https://s3.amazonaws.com/sinamozagemoger/wukagozidelufukuvijado.pdf
    • https://s3.amazonaws.com/pazovugal/android_borescope_camera.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e678.bin
30538cedae9bb80294b7d47402da01a2f72f3673d49a7987359581dc50948f3b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE678 5468 bytes
font_01_sfnt_off0000f903.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF903 1800 bytes
font_02_sfnt_off00010191.bin
01e5170122655339fe1ae0edbc97eb162789a59585f6d39a950911380eed2eb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10191 10452 bytes