Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbcc88969c3e63b…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 18:26:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a9105c967bc8f83f1daed0185e505e22 SHA-1: ca27dfe9c8f2c78b564a41e7d9775a0ad2cb52b5 SHA-256: 4dbcc88969c3e63bc02f09be6925ec5a4f07d26c01a51a2ad3a0506bdb951e04
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/award?keyword=grid+dnd+5e+pdf+google+drive PDF link annotation
    • https://cdn.sqhk.co/xikesurufa/uW0NjfY/gikemekovoregugaguroro.pdfIn PDF document text
    • https://gadebalemalun.weebly.com/uploads/1/3/4/4/134443756/7429526.pdfIn PDF document text
    • http://vegixojarek.iblogger.org/xofekizobudedak.pdfIn PDF document text
    • https://sozuleku.weebly.com/uploads/1/3/5/9/135962343/ruzujakelixa.pdfIn PDF document text
    • https://jabibodusap.weebly.com/uploads/1/3/2/6/132681053/9504615.pdfIn PDF document text
    • http://sushibara.net/algebra_1_workbook_with_answersfkeq3.pdfIn PDF document text
    • https://cdn.sqhk.co/bebumula/ggf9hiE/line_official_account_download_mac.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/48863271291.pdfIn PDF document text
    • https://tudisapa.weebly.com/uploads/1/3/4/6/134660317/1aad54.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/moxiji.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/cant_help_falling_in_love_ukulele_chords_strumming_pattern.pdfIn PDF document text
    • https://cdn.sqhk.co/wewowedim/BsSVlge/zexute.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lokunegop.epizy.com/39009462408.pdfIn PDF document text
    • http://rolozaj.epizy.com/circuits_symbols_worksheet.pdfIn PDF document text
    • http://xinudekewukipi.rf.gd/vita_spa_salon_hot_tub.pdfIn PDF document text
    • http://sixexelotu.epizy.com/after_we_fell_read_online.pdfIn PDF document text
    • http://vimiromomekex.epizy.com/the_explosive_child_book_review.pdfIn PDF document text
    • http://kovefevejafuk.epizy.com/27380535555.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_off0000e0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C5 5036 bytes
SHA-256: c1f8119f16ce2dbd461579bb5b44d4ed6f5a0176b45d4284971d066e92097f3c
font_01_sfnt_off0000f208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 10692 bytes
SHA-256: 43eeb91254e0595691076ab10419a330938655c256ca988099b0bbad79b06a0b