Malicious PDF — malware analysis report

Static analysis result for SHA-256 9585206e79740f62…

MALICIOUS

PDF

65.1 KB Created: 2020-12-18 03:41:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 721ad4032595d43ebf528a780f47145c SHA-1: 90555e99aae1d8e92c7130a02083ce8e0cb35905 SHA-256: 9585206e79740f6221a2b9ed8513b7ecf7ef8c914c27959e8fd10c122a4175ed
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/strik?utm_term=pilas+y+colas PDF link annotation
    • https://solubowobadiwu.weebly.com/uploads/1/3/4/6/134642134/jazadugex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_5fbeec4d35e87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_5fd101049cb6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472475/normal_5fa6eb9e54ced.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/526cde17-138d-4b08-8f78-13abdb41889e/absolutely_on_music_murakami.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/que_son_los_armonicos_electricos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5a6d7e-6deb-48a4-a1f8-4ae3f72a5da4/majutezudimalifo.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/46237435507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b6c450-1a61-4fc3-93a5-5ee0e8265eea/anesthesia_specialist_mgsv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada2d7fe-b979-4ca3-81a6-c3f9fcebdb6d/6548991581.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/khachaturian_cello_concerto_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/java_8_features_by_durgasoft.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_off0000c3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D5 4800 bytes
SHA-256: b2d87f05e6356188be7ddb5c69e0159fbfc9d7d077c050188470253a43286b6b
font_01_sfnt_off0000d444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD444 11060 bytes
SHA-256: 2bf8b61b66ba632f1c52b9e1b19ee9df4f2243d16a0a898ca100c3b67882388a