Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04ddb6692e35e51…

MALICIOUS

PDF

79.3 KB Created: 2021-01-16 00:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 729559546467514caa378dfa70d0c061 SHA-1: 7a72952390806641b59f5e189ffc1d5029a34881 SHA-256: c04ddb6692e35e517e63a85144e3851f41002a5d9e26ff1c741aff4d64d36858
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, appears to contain metadata related to a tutorial, suggesting a social engineering lure.

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://trafffi.ru/123?utm_term=aws+glue+tutorial+edureka PDF link annotation
    • https://cdn.sqhk.co/wumigapinido/iZugfuh/ice_rage_hockey_apk_mod.pdfIn PDF document text
    • https://site-1175916.mozfiles.com/files/1175916/82058068593.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/eghhjic/foxawanuzejado.pdfIn PDF document text
    • http://everypolitician.org/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tazopaju/58760256392.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/8869641682.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/89577336271.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/my_favourite_things_jazz_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/38045028340.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/charcoal_face_mask_sheet_benefits.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/35782388631.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/15165078981.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/26338274224.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/93872891069.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/domestos_thick_bleach_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/kasivimarejuja.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/beeware_android_tutorial.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_off0000f168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF168 5140 bytes
SHA-256: c00087aaf3846e66310fc4fd2745059d7a45b42378a1a87adef90361a8ccc8f6
font_01_sfnt_off00010303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10303 14488 bytes
SHA-256: 068f32e8dcf399e50dd17852e3b09556b1dd6528929b78162b411d3ae97030e5

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