Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eaf6a2c16ee9d85…

MALICIOUS

PDF

65.3 KB Created: 2020-12-14 17:55:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e3359eb48ab8aa748a3f20b7a5b86e0b SHA-1: d23582080edbdbb0186040822179eb09deb0a66a SHA-256: 4eaf6a2c16ee9d8505f271a490be38867dc1c1f90c7302f635827d55d7eb6528
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/strik?utm_term=ambassador+inn+milwaukee+parking PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392664/normal_5fc816d9085a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480584/normal_5fc12c4b8f105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5fa9bb8fb63e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391009/normal_5f9c0a802cf43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5fa608eae1ea5.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/faluzotixupi/tigala.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/effects_of_imperialism_today.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/mermaid_animated_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/movies_utorrent_english.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/18801886368.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b6c78787e8798971b212/t/5fcb5eca0814be4f73e7faaa/1607163594747/color_ball_smash_3d_model.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/ed_dates_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce06e4996d611d5f61bc92/t/5fcf2cfccd9a2056ff70ea59/1607412998403/how_to_use_soft_spiral_rollers.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/64837982833.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_off0000c1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A4 5564 bytes
SHA-256: a83be5ee6cab661986424b40b2a9ec39e7543e6b147e6c8c11d46fb8ef6795ae
font_01_sfnt_off0000d482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD482 10576 bytes
SHA-256: 1a67b80ce0ddd442094fd3fd23f5ef96f5d4705dd3178d172bd3d975fa27bb87