Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c3fa313c4e12c2…

MALICIOUS

PDF

76.2 KB Created: 2021-04-02 15:23:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f79dd8e2db916ee3967c1ebf79529764 SHA-1: d84e8e007923be3e5a463fec070f6a0131852ec7 SHA-256: 09c3fa313c4e12c2844fb897dbbe1cf6cd005cc22bf4defb760855022bad01e1
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 a suspicious domain, 'ponafet.ru', which is presented as a 'book wing chun pdf'. Several other unknown URLs are also present, suggesting a phishing or scam attempt to direct the user to malicious content. No scripts were extracted, but the presence of embedded URIs and the nature of the heuristics indicate a likely phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/award?keyword=book+wing+chun+pdf
    • http://findssldz.xyz/22817989475erai8.pdf
    • http://cardioactiveitalia.site/kazegudebadelubpds2.pdf
    • https://cdn-cms.f-static.net/uploads/4412380/normal_600f978e63346.pdf
    • https://cdn.sqhk.co/gusisezepemu/ichfF01/sputnik_v_vaccine_side_effects.pdf
    • https://static.s123-cdn-static.com/uploads/4461791/normal_5fde75342701b.pdf
    • http://saleproducts.pro/98396637237otng3.pdf
    • https://cdn-cms.f-static.net/uploads/4382408/normal_60563dac60ec1.pdf
    • http://microbladingcertificationdfw.org/firebase_write_to_google_sheetsqj1rz.pdf
    • http://ital-tess.space/ninja_samurai_assassins_creed_game_ninja_warrior1f9cb.pdf
    • http://getyourcredit.info/sherlock_holmes_full_movie_in_hindi_download_720p_filmyzillaj8p9j.pdf
    • https://static.s123-cdn-static.com/uploads/4494888/normal_5fee63b96ce80.pdf
    • http://mpvideo.org/voginifavodagapokamawiju6rx2s.pdf
    • http://woodlesenka.ru/nuzarovasatumifumpqxol.pdf
    • https://cdn.sqhk.co/fadejiweruw/iIZk4jf/67792365675.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/furunumaroxun/beder_meye_josna_video.pdf
    • https://s3.amazonaws.com/desekusoxi/madame_butterfly_boss_sekiro.pdf
    • https://s3.amazonaws.com/jukoxisojow/14595664401.pdf
    • https://s3.amazonaws.com/nowokil/dajenovivetedatawezot.pdf
    • https://s3.amazonaws.com/jedobufudajewu/dell_7010_sff_i5-3470.pdf
    • https://s3.amazonaws.com/sumesawoxajew/11675155202.pdf
    • https://s3.amazonaws.com/kovibu/los_hermanos_karamazov_resumen_obra.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_off0000ec83.bin
84f0167a4a0153c9c13a3c5b85bfcc7d8bea90d33fd3468e7e9d3357403cdf5b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC83 5108 bytes
font_01_sfnt_off0000fe0c.bin
5c34589ec741fd8d910c435bd9e21db647c1e5ab92b00513b8a4d15a91f50a34
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0C 11132 bytes