Malicious PDF — malware analysis report

Static analysis result for SHA-256 590d4c3bf5eef833…

MALICIOUS

PDF

74.2 KB Created: 2020-11-20 21:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2923cec09dc2b1e3e6395ff41ca1675b SHA-1: 3fe489ede5b9e1a44b124fbe40f39110b724a981 SHA-256: 590d4c3bf5eef833c0bfff74c43d7452c397a0166bfdcc090f91d5b1428277ab
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://traffking.ru/123?utm_term=poultrygeist+night+of+the+chicken+dead+2006 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388421/normal_5fb2b4d7903c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fa09096b3a69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5f926f78927b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385410/normal_5f93bea6c64ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427085/normal_5fb2bd5055308.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/lekizopiloref/11037471716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd4969ee-aa83-4cad-898e-188902a917d5/83926129488.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/16785807890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35bc90e7-67e4-4fd4-921b-694bfd7b66cb/xuzobawepidot.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/47569780359.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/amphibians_characteristics.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/luxepaxuxiwuvuporewewib.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/sample_address_form_html.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/islamic_arabic_baby_songs_free.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_off0000e29f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29F 5880 bytes
SHA-256: ded84f0694a9b9f761a4c3920b925290e6d60d1cd7eca5556b26daab9c9c1132
font_01_sfnt_off0000f6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A8 10900 bytes
SHA-256: 52fa28ef68543e6dfa91dab986cf411eb4a33f9aa8addc6d7899b3916380046d