Malicious PDF — malware analysis report

Static analysis result for SHA-256 df144b6e37a1a296…

MALICIOUS

PDF

68.8 KB Created: 2020-12-03 09:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 02ce624e5af9c4b1cd90fdaf1c51fb14 SHA-1: dd4a6b500b9d27dea857cd33c4797f63c7819343 SHA-256: df144b6e37a1a296292079494e3fdaaf63518f454c3e93edbd760e736ef48b95
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily corrupted, contains text fragments related to game cheats, suggesting a lure to entice users to click the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://trafftec.ru/123?utm_term=forgotten+tales+mmorpg+cheats+for+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408009/normal_5fa7d0a755c7d.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/mejigavukolu/jugufinuved.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/insert_blank_page_into.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3397205c-f77f-47e5-9756-22e9cd02a47c/sirius_black_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/juxirojum.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/76037219138.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1504eaf37e3b6463ad9c/1606292744806/after_libro_3.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/character_sheet_template_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/rixakuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/542a72d3-78cd-4876-8499-350191fff6a2/mla_bibliography_format_chapter_in_a_book.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/49100513785.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/duvuwakiza.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_off0000cdbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDBE 5524 bytes
SHA-256: 65044a33384a6d3c4d0b8c39eabf976d42ebacba168d0c5b9fdd8badfde2d826
font_01_sfnt_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 11008 bytes
SHA-256: 088fcfdf226bc12e219816541463889ed55ba46c1092f495db976e98cee4fc66