Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b977d66e30b0f1…

MALICIOUS

PDF

73.1 KB Created: 2020-11-19 20:47:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f8dceb09e434558d4edd52135bf4150d SHA-1: 28839dc65412c885048df1aa0e2d69840613ef4a SHA-256: e0b977d66e30b0f19a95fb1262fa891f6373e1b510b9084db482522f4365a9a7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to children's games, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=juegos+de+reglas+para+ni%25C3%25B1os PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410186/normal_5f9dc23c06044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5f8a33c1dfd99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426551/normal_5f9ace6e4862d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_5fb3076354a06.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/d6202b8a-ca8b-4643-8fd1-7b9df0626df1/falidagitidoniwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a9400b7-86ac-448b-87f7-f4d51cd0dbd5/anahuac_high_school_ffa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/297cd01e-c013-4e0f-9369-f26fdcc54f1a/gunezub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d168de7-1b00-4727-a071-341edfb22ed1/12652525565.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/dolajuxom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4052f8a-fa58-49c7-aab6-31a9a410601d/waxisi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd151f3-81e0-4cb6-9e72-768656b26db5/classical_and_statistical_thermodyna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853ba291-92ed-4451-afe8-48c34a5b2ecf/mawutitejikevudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f3fdbda-38a2-4eeb-b206-9d74a5cf88d3/xijavimidisadujibexul.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_off0000deee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEE 5328 bytes
SHA-256: 81298ce9c6f9e90f77388b9db6795f09b258d4e51b4b70da23f60a01fe94492d
font_01_sfnt_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 11492 bytes
SHA-256: 45adf8c953254862dadd28b0477245627cb52f3fe0d75fec3c859ee4317f1b61