Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f589f1b198596b…

MALICIOUS

PDF

73.7 KB Created: 2021-02-23 14:27:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3e8bd284ee6ea3dfac137cfb16544960 SHA-1: 76a94d25a74ab24ac4e6ed01eada937d99634d39 SHA-256: d1f589f1b198596b5f3a41d179173f91d34c2cc4ba8621ea618bc19d3150823e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URI pointing to a malicious URL, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though truncated, suggests a lure related to 'best free gmat study materials' to entice users to click the malicious link. The presence of an external URI and the ML classifier's high confidence score indicate a phishing or malware distribution attempt.

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://bologen.ru/strik?utm_term=best+free+gmat+study+materials PDF link annotation
    • http://idealica-italiauficiale.website/fast_and_furious_6_in_hindi_dubbed_msjgim.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/jjgjihJ/kemana_atlas_pergi_membawa_aurora_heart_mobile_legends.pdfIn PDF document text
    • https://cdn.sqhk.co/xidupesijij/YjjjhgN/zeus_dog_breed.pdfIn PDF document text
    • https://cdn.sqhk.co/lajefage/b4Ghjge/home_assistant_alexa_tts_volume.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/0vjbKbl/natural_fake_nail_designs.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/ghujcNr/kiwus.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/jhhgKNF/vosoxitulowixoxof.pdfIn PDF document text
    • http://boomua.site/asla_song_video_downloadbdi7e.pdfIn PDF document text
    • https://cdn.sqhk.co/juzurupivepo/hdrd6in/40375501618.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/jGvgctY/pudupojexaxapu.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/Bgeibie/lufarinibakabubi.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/zaxawetawupo/how_to_change_font_size_on_brother_model_pt_70.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/49538310330.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/equipment_installation_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/34260522351.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_off0000e1ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EA 5376 bytes
SHA-256: 8ee1f906e8aec5b33c2a758efc3f2baa78c620ac5dc548bbe6236fd92520d16b
font_01_sfnt_off0000f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF429 11176 bytes
SHA-256: effb5604b903daa38cf88bbce8b1b57c4e4eb93e7de9e9d848dafdae64fa5837