Malicious PDF — malware analysis report

Static analysis result for SHA-256 574ff6f04375889a…

MALICIOUS

PDF

84.4 KB Created: 2021-03-21 23:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9278161a67264bff382cdcc24bdb8a3e SHA-1: 1ca78390b64ac421431b44cf70ea621244a7f52f SHA-256: 574ff6f04375889aaaf086c0739c5a2428e7edd211931e9b599cc7baf1925c81
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL that appears to be part of a phishing lure, masquerading as an employment attestation form. The PDF structure itself does not contain executable scripts, but the presence of the malicious URL and the overall classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/award?keyword=attestation+employeur+cesu+vierge+pdf
    • http://oneplusonemain.xyz/15072618960crbgk.pdf
    • https://cdn.sqhk.co/sepetuvab/dhgTmSW/tedavibesos.pdf
    • http://verification-help.com/67507007862hnny3.pdf
    • http://dovamemowiruz.iblogger.org/2018_climatescope_report.pdf
    • http://phulop.store/gikidopuvetibofusoriluwe3jscd.pdf
    • http://construt.site/811504960608hhq4.pdf
    • http://tuvobanunezito.22web.org/experimental_research_articles_psychology.pdf
    • http://negeduji.66ghz.com/marina_abramovic_performance_moma.pdf
    • https://cdn.sqhk.co/lunabati/aAzcgdE/epic_books_logo.pdf
    • http://cashfree.store/bivetoxels3kwn.pdf
    • http://rababevaju.22web.org/nawaxuzugotadova.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bimuvugibane.rf.gd/xewajevinorapipa.pdf
    • https://s3.amazonaws.com/zumomasugipeno/fegowogizi.pdf
    • http://wiraxoxepopiret.rf.gd/41495126706.pdf
    • http://redojirax.epizy.com/30831485632.pdf
    • http://mifevup.rf.gd/ny_post_bettors_guide_week_5.pdf
    • http://pojasosi.epizy.com/read_tinkle_online_free.pdf
    • http://jodewejuwuw.epizy.com/game_guardian_no_root_app.pdf
    • http://minazefawubiso.epizy.com/2005_honda_civic_ex_owners_manual.pdf
    • https://s3.amazonaws.com/nupotukig/ion_grid_worksheet.pdf
    • https://s3.amazonaws.com/gizonukorad/battlefield_4_commander_apk.pdf
    • http://genurenifu.rf.gd/49046382831.pdf
    • http://walepoxaz.rf.gd/jaundice_types.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_off00010359.bin
862c4283fd4d548f0189899c8382f5eef69e12af0f4ed8afee9654d7e32400c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10359 5628 bytes
font_01_sfnt_off00011682.bin
d896a22db2669f14b3a0a5da310c60da6ca578786f9b0742a6f528a8fcdd91fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11682 13984 bytes

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