Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aac29ac9d538750…

MALICIOUS

PDF

76.9 KB Created: 2021-01-06 16:13:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3763a5cc9724924284c7bbd30b7fe13c SHA-1: ef55eeb4f3b1f019516c729320ac3c6af4666790 SHA-256: 7aac29ac9d5387507a9873dc7a24b86d3d32d386f1d36db24048511945092010
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffe.ru/123?utm_term=learning+from+data+a+short+course+pdf PDF link annotation
    • https://cdn.sqhk.co/zupodejadofe/CggqknW/starcraft_1_remastered_activation_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_5fa70485a1b7e.pdfIn PDF document text
    • https://cdn.sqhk.co/jawubibegeba/dOgfjfz/21354208606.pdfIn PDF document text
    • https://cdn.sqhk.co/xakutofi/rJBiaje/modora.pdfIn PDF document text
    • https://cdn.sqhk.co/wibepudib/Q4gcIig/26105890252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446382/normal_5fdbe10a1a236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fe022a9f09e5.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/Rgeihia/builder_base_level_5_builder_hall.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/pujinit/warforged_components_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/wavestown_coloring_sheet_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/movegida.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_off0000e152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE152 5360 bytes
SHA-256: 4b099b0439735c3ca03f1f16550414d197b6a9a4ede55b4a10375de02b95d635
font_01_sfnt_off0000f35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35D 11344 bytes
SHA-256: a99ef883ac1014e70673a8723470ba2821f4b9e08f6f60e5522e6a8e118e0543
font_02_sfnt_off000118c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2