Malicious PDF — malware analysis report

Static analysis result for SHA-256 2edae93f61ad04e9…

MALICIOUS

PDF

81.2 KB Created: 2021-03-30 17:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0182b73d56ac8abdd7669176e54a7f68 SHA-1: d51bb6254c36178fac4a2da017e4a7b9059974bd SHA-256: 2edae93f61ad04e9d9ae8c837d759075c52d41d207ff6cd289723a2ba36af2a1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that is likely used for a phishing or malware distribution campaign. The document body, though heavily obfuscated, appears to reference 'Tutu app ios 12. 3. 1', suggesting a lure to trick users into clicking the malicious link.

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://soxebez.ru/123?utm_term=tutu+app+ios+12.+3.+1 PDF link annotation
    • https://cdn.sqhk.co/rukeditele/IKkgdhj/modern_style_rugs_uk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477886/normal_5feda817b896e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_6049e80d13191.pdfIn PDF document text
    • https://cdn.sqhk.co/xesoralo/chiwjin/bazelojarin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418170/normal_5fdde2edb03b4.pdfIn PDF document text
    • http://gopagafab.medianewsonline.com/33389373991.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/SHjcijT/danafigo.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/Eifgfgj/97824885052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_600f5107d9b4f.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/7ijtTw2/cossacks_3_mac_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473047/normal_5ff90cb20b4cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pumumiz.epizy.com/headed_letter_template_open_office.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/how_to_install_haier_automatic_washing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/13317301482.pdfIn PDF document text
    • http://wudemexa.myartsonline.com/zofasidofopo.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/xopovizodowudusas.pdfIn PDF document text
    • http://vavubal.epizy.com/best_movie_maker_app_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/67436440015.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/chess_rules_for_beginners.pdfIn PDF document text
    • http://kilarosine.atwebpages.com/artrosis_manos.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/86926615203.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/60429177664.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/25117857656.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_off0000fed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED2 5012 bytes
SHA-256: 7c03c67c52f4063f716b972027249cfbd0375d6ffec802ad246a0847ff0d201c
font_01_sfnt_off00011002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11002 11120 bytes
SHA-256: f070396c6a565ce3bf8771fdca562e8a97dac0938b1db43515d35bea3c34c6b4

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