Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c260014c2eef7a5…

MALICIOUS

PDF

73.6 KB Created: 2021-03-03 03:33:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7c7aa7aeaec641927eb4218664df68d6 SHA-1: f1da148b90be51919f3acbd635720c22cd756991 SHA-256: 8c260014c2eef7a59c0492c993853ec5c63adfc318f8d277e642ba54d2a48cb8
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan and ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a game, aligning with common phishing tactics.

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://soxebez.ru/123?utm_term=sperm+wars+baby+shower+game PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425929/normal_6022da4cec2e5.pdfIn PDF document text
    • http://jodesomuxuduzu.22web.org/166475552.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/xupupoduwipafopuzumojun.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/t-sql_functions_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411935/normal_60349d0e035b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421615/normal_603c015883bef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zezatutafut.epizy.com/princeton_review_sat_chemistry_practice_test.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/dadizufu.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/accra_map.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/yoga_mudra_benefits_in_marathi.pdfIn PDF document text
    • http://papawipowujujed.rf.gd/aqa_gcse_english_language_examiners_report.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/77679111335.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/3._binomische_formel_beispiel.pdfIn PDF document text
    • http://fusifovizit.rf.gd/circle_theorems_rules.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_off0000e2f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F8 5640 bytes
SHA-256: 6e533377bfdfef4b4630c26bb7d24473b510fa32d9f6245ddfe7398a27bd62c9
font_01_sfnt_off0000f609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF609 10448 bytes
SHA-256: 1d5341168e220ff9f2c095ca797a24d03ffe4aaa1393e1fe51c5c1f45e64b210

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