Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3054d65ea6a3b4…

MALICIOUS

PDF

74.0 KB Created: 2021-03-24 11:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a81173e8af615d954274691dcbb1f94c SHA-1: 1c1accdc146580c5e094495b4626cdca0d14be4f SHA-256: dd3054d65ea6a3b49720dba41953c282daea82531d95eba4cb60f1007d5647d4
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, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though heavily obfuscated, suggests a lure related to educational content, a common tactic for phishing or malware distribution.

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://midufefew.ru/wix?keyword=fascism+rises+in+europe+worksheet+answers
    • http://kudimuk.iblogger.org/catalog_mccb_schneider.pdf
    • http://idealslimitaly.site/jujofipadovelivagobunixodzjn.pdf
    • http://virutezofulodud.iblogger.org/functional_training_guide.pdf
    • http://jukexufepezaj.22web.org/sims_3_cc_modern_furniture.pdf
    • http://kreativoblako.com/boolean_search_logic_cheat_sheetjaof1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ruxemad.epizy.com/momobebofado.pdf
    • https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_8dfd4d831c0643cab8a05c3cecba8651.pdf?index=true
    • http://fegumipidibig.rf.gd/ciencias_formales_matematicas_y_logica.pdf
    • https://uploads.strikinglycdn.com/files/50e8badf-07f8-4995-98a4-9f7026e5fa7f/gulekemejitarugefufoxuxu.pdf
    • http://gepuwuvezu.epizy.com/51532986962.pdf
    • http://ditajizuru.rf.gd/30126893261.pdf
    • https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_bb4cca99b53b4b279e8d8802863103c5.pdf?index=true
    • http://pimiziguzip.epizy.com/vavunikitasonova.pdf
    • http://larazegabolulaf.epizy.com/chashme_baddoor_songs_mr_jatt.pdf
    • https://uploads.strikinglycdn.com/files/ad607686-97c6-40fa-8f19-3891a8b9798a/kigenimovikes.pdf
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_9350052bd5f44f2498e590149be95731.pdf?index=true
    • https://814cba0f-f649-4223-bfe6-7884e6e02b9d.filesusr.com/ugd/c1108c_7f1fa9a2018f42bcb960f1bc675f065f.pdf?index=true
    • http://pejatopofir.rf.gd/dingbats_28_answers.pdf
    • http://luzadewo.epizy.com/brighton_rock_queen_sheer_heart_attack.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e48f.bin
766b50a8a6c48423f686b3874324459c5be1c13b3d12d544fe40241307cde587		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE48F 5252 bytes
font_01_sfnt_off0000f658.bin
a3013bf9092d124dbd7ffb0c6188a6fd73a0fcaae574f334643ff39670963f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF658 10664 bytes

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