Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd177c57cb23c10c…

MALICIOUS

PDF

82.1 KB Created: 2021-01-31 01:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f173946b9a07f23e110fae4bd7f4047f SHA-1: 4bea139b09671b6da8643f3bfe6ea81dd93cf855 SHA-256: bd177c57cb23c10c1d688b6351512b97a47c7e11d7b12dfac5c47a2cfcea5408
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'correlational vs experimental design' which points to a phishing or social engineering attack. The embedded URL https://bologen.ru/123?utm_term=correlational+vs+experimental+design is likely the destination for this lure, aiming to redirect the user to a malicious site.

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://bologen.ru/123?utm_term=correlational+vs+experimental+design PDF link annotation
    • https://cdn.sqhk.co/kinibemazoz/etMhijh/sandisk_memory_zone_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/gagufatemo/EGUihgf/skater_xl_maps_xbox.pdfIn PDF document text
    • https://cdn.sqhk.co/bokirebi/hchiWUp/android_contacts_widget_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/YPhjGW1/zapiromabiradulazaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/heWPUvW/halloween_runescape_2020_rs3.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/id4hb0n/download_free_pinball_games_windows_xp.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/bhehgje/replika_my_ai_friend_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/bgi9hgJ/mulojirigupetozu.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/cjiTWii/goruveb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zexozavo/kejula.pdfIn PDF document text
    • http://neveket.epizy.com/stokke_crib_sheets.pdfIn PDF document text
    • http://fupotuz.rf.gd/english_worksheets_for_grade_4_pronouns.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/breakout_edu_answers_ready_player_one.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/android_arsenal_buttons.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10576 5312 bytes
SHA-256: 4d23a9551c3f3557cc288d7fb530ef692d8f28f2fc3ec9ad41a6a6a8204d286b
font_01_sfnt_off00011777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11777 10480 bytes
SHA-256: b6f61ca11ba9f983df4d483da6676575a36be81d04b074853d308e60e657497e