Malicious PDF — malware analysis report

Static analysis result for SHA-256 351bf57c636f572c…

MALICIOUS

PDF

65.4 KB Created: 2020-12-22 20:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a459ed6b34a626ae28de0d8e125e867b SHA-1: 934df969b0aa95fe3500d3dcab675ed89e812675 SHA-256: 351bf57c636f572cb2a00de6680939b098af07bce39cdf7af9bc5cfab5fb2356
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://traffnew.ru/aws?utm_term=cd+billy+ocean+greatest+hits PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5fa0948389e53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392666/normal_5fad726f4adb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426410/normal_5fd967047ee8b.pdfIn PDF document text
    • https://fabedajigunud.weebly.com/uploads/1/3/4/4/134480588/bivijev_mavufibetetaj_sitaselepat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf66b00f7af3919d2fbd9/1606219371775/sifinesak.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0b653fdc31513a119be7/1606224742313/terojetuzuzatujezasem.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/circle_shape_templates_to_print.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/7916095593.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/62923633858.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/52527982554.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/edtpa_lesson_plan_template_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/ayo_teo_rolex_instructional_video.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/tavevemekulix.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_off0000c148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC148 5348 bytes
SHA-256: e116e711218e49f4f38b3795292ad8faee49bb12ec08e9ed93bb98469954f8dc
font_01_sfnt_off0000d36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 11032 bytes
SHA-256: c4dfc674217de9f40141460ddda4414d14fc216ae895f52ba4db6803ba933c53