Malicious PDF — malware analysis report

Static analysis result for SHA-256 d588191e2bfbb21c…

MALICIOUS

PDF

72.6 KB Created: 2021-03-04 00:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e73792ade7ebca0be00f3bd65efb836 SHA-1: bcd6fb0c91817e5c0fed7ea7cb04578463e89af3 SHA-256: d588191e2bfbb21c0f7a4d463210296ebe904b329f3e4b40dbb10a7471a39e92
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for printer setup information. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed 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://golowaki.ru/wb?keyword=how%20to%20connect%20hp%20printer%20to%20wifi%20using%20pin PDF link annotation
    • http://mx50off.info/batch_file_commands_windows_103bqkp.pdfIn PDF document text
    • http://itawegan.space/fetemapefiruketoxufoxafufrfqz0.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvetuzaxi/jjjjcjh/77476075418.pdfIn PDF document text
    • http://kepukarob.sportsontheweb.net/batch_file_programming_for_loop.pdfIn PDF document text
    • https://cdn.sqhk.co/rubupidorinu/Pjcgjyw/video_downloader_for_likee_no_watermark.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/SiWTlgh/parachute_health_sign_up.pdfIn PDF document text
    • http://setofexperience.site/152422639871tdd9.pdfIn PDF document text
    • http://mitisavad.getenjoyment.net/craftsman_113_table_saw_fence_upgrade.pdfIn PDF document text
    • http://kulinar2020.site/whirlpool_washer_wtw5000dw1_repair_manual6usdc.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/fuwenoxuzasila/canada_express_entry_year_end_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/57480350560.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/how_do_i_beat_the_djinn_in_witcher_3.pdfIn PDF document text
    • http://kepofif.onlinewebshop.net/55514152478.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/30229148532.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_off0000e110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE110 5088 bytes
SHA-256: 91227fe00aa86fde21add595bc4f3bca48a6f5da41422bbf61caa9653f57fa91
font_01_sfnt_off0000f277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF277 10192 bytes
SHA-256: 7d4425f3e8e8ae89182eda08d9e34734b25a6f57668c0f10f39ce147dd7715d3

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