Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c7962bc8e2b8695…

MALICIOUS

PDF

73.1 KB Created: 2021-02-20 01:33:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ba216092a73f2fa1a493a7f1c83f80f6 SHA-1: e6a5005c762f2b83c62ad8df4899842d13839f02 SHA-256: 8c7962bc8e2b86951bc7aa2774b93bf616f1b89f1339f975581425debc3a54bd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs, one of which, 'https://baarspo.ru/123?utm_term=friends+like+these+band', is flagged as suspicious. The document body, though heavily obfuscated, suggests a lure related to a band name, likely to trick users into clicking the malicious link. No scripts were extracted, but the presence of external URIs points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=friends+like+these+band PDF link annotation
    • http://zuzotolifewujex.22web.org/ancient_greece_ap_art_history_quizlet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5ff1523136c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453732/normal_601104d5d99de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408483/normal_5ffdb3f59717b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xarojapi/android_app_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/doa_sesudah_membaca_surat_yasin.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/blacklight_retribution_game.pdfIn PDF document text
    • http://vupiwenuwog.epizy.com/nezir.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/voice_message_app.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/20044502360.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/7th_grade_math_book_teacher_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/wijuwulejiti.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/vevizi.pdfIn PDF document text
    • http://fopagozijudiri.epizy.com/66401315770.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/tax_evasion_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/display_excel_sheet_in_html_iframe.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/zonagurikobejisevo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42B 4748 bytes
SHA-256: ce959a1416aad4c6a4b408b5571dfdd7843518846c809d680372b0ad05afe8f1
font_01_sfnt_off0000e42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42E 10912 bytes
SHA-256: 1f4d6325dfd5e6a6879eeab28c456cb3afb50cb4e6e4cc1ce7c826b9ba7df4c7
font_02_sfnt_off00010953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10953 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.