Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a077e2e8123cd52…

MALICIOUS

PDF

83.0 KB Created: 2021-02-02 20:05:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e07d9526ece8969eb2e6817c7e98659c SHA-1: ee22fd52b691be5f58cd13ad70be99d4e517a680 SHA-256: 3a077e2e8123cd528a63751b666a55db1edf79b5e56b348c71d07a331991393e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'fancy font generator'. The presence of an external URI strongly indicates an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

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://crophysi.ru/123?utm_term=fancy+font+generator+copy+and+paste
    • https://cdn.sqhk.co/kisereta/8shhhjb/rockauto_nissan_maxima.pdf
    • https://cdn.sqhk.co/titabofasika/Zoihbhf/61618159402.pdf
    • https://cdn-cms.f-static.net/uploads/4408584/normal_5fe876f79b85e.pdf
    • https://cdn.sqhk.co/sidogorego/dPlhgjb/71810358888.pdf
    • http://dazixetenulega.22web.org/english_to_marathi_translation_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kotodur/67181326002.pdf
    • https://s3.amazonaws.com/jofunozuzof/the_bellas_final_performance_lyrics.pdf
    • http://pimovutune.rf.gd/becks_prime_menu.pdf
    • https://s3.amazonaws.com/xomudufe/n64_emulator_ios.pdf
    • http://kubemumibesedu.epizy.com/air_fryer_oven_elite_manual.pdf
    • https://s3.amazonaws.com/benubapopikaj/xizab.pdf
    • https://s3.amazonaws.com/fokapikow/vixixixe.pdf
    • https://s3.amazonaws.com/liguwubore/surf_report_lafitenia.pdf
    • https://s3.amazonaws.com/sefiwegegagu/linij.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ec.bin
9e5a0644f971dd2e6cfdcbb61b8e9801351c1c53643d5e9c8f34115562353786		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EC 5348 bytes
font_01_sfnt_off0001053c.bin
9cbec25dd982cfae712be562f101a11828e61fb91fc468e5a42a72199b86c727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1053C 10588 bytes
font_02_sfnt_off00012999.bin
2ce0ac0ceaffaf7e07c201e7184585939e5ad7091f2091a4b71887a55cfe83bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12999 16112 bytes

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