Malicious PDF — malware analysis report

Static analysis result for SHA-256 51ecae6e77bd4989…

MALICIOUS

PDF

74.6 KB Created: 2020-11-30 15:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a3707f4be7ea73f6ad0c5c12e128be7a SHA-1: df846e1cf4bcf8d09e0449a0bd05e9991559eec0 SHA-256: 51ecae6e77bd4989c64261cf17f151668d22f05db8fb47b2a07e9c574fe3f21c
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 0.9997

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://traffking.ru/strik?utm_term=reading+fightin+phils+schedule PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f89e03e41ee7.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/5fc0c87788c99b6d37a67a80/t/5fc3ff5d9b1ed03538595c73/1606680414298/youll_be_in_my_heart_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32de8cf0-e90e-4eb1-bc92-9888f0d95198/5185324665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c781c9-aba4-446e-9bd6-4d53b9f6c1e6/dedosavepunodugusakederop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47232e40-9006-4f35-86f7-dafcf489c6da/zekonikanoxe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc069c17d0c8f249d3e4d8d/t/5fc1b6e5eaf37e3b64dc5619/1606530790281/panasonic_arc_4_replacement_blades.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd047929c5e2669026c792/1606222969956/how_to_find_zeros_of_a_function_fraction.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf358edabee7b44067d36/1606218585422/fancy_feast_dry_cat_food_recall.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc2e9de-45e5-405c-8ede-8d63c7fa1399/peripheral_route_persuasion.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd745bcb0228a2824d01/t/5fc14e8b18e72e5fdb07e51a/1606504077643/30271875915.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_off0000e3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F0 5328 bytes
SHA-256: 8af9f6e6dd830f2e5bb435933cc0355af73ac3914015819f17a60d931fe17640
font_01_sfnt_off0000f624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF624 12280 bytes
SHA-256: 1b28db6542baabffafdbc6353e6e4d8f98d439a07d3789ef19201f29b36b311c