Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cf088622cfaa359…

MALICIOUS

PDF

78.3 KB Created: 2021-02-19 13:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8a3a499c9bfd7dbd4b0936e373092950 SHA-1: 714536a828ed1ca6acb458c50d985fda17b4c16c SHA-256: 5cf088622cfaa359754c62d57574a221eda8655550548ca11f1b6f6b39c8e603
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://leonvi.ru/strik?utm_term=introduction+to+trigonometric+ratios+ppt', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=introduction+to+trigonometric+ratios+ppt PDF link annotation
    • https://cdn.sqhk.co/dosakupu/hgijdBz/sotidoxo.pdfIn PDF document text
    • http://tradebot.space/3523653025651xrf.pdfIn PDF document text
    • https://cdn.sqhk.co/kakezesarop/6iQXSdQ/37802341708.pdfIn PDF document text
    • https://cdn.sqhk.co/wevujawej/dgj5icU/stock_dialer_apk_xda.pdfIn PDF document text
    • http://iminn.ru/what_are_the_problems_in_writing_englishh7658.pdfIn PDF document text
    • http://yandex-dostav.ru/boring_life_status_video8zoe1.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lomuper/rorag.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/gasalozekilofuzan.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/8646856136.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/putting_words_in_alphabetical_order_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/3ds_max_2019_tutorials_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/accounts_receivable_aging_report_sap_transaction_code.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/b._ed_form_2018_last_date.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/candy_crush_saga_mod_apk_latest.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD050 2416 bytes
SHA-256: 69732d47ddac934a9ccb066c01b13441cd8d0c237ff3462f31980678decd1970
font_01_sfnt_off0000daef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEF 5300 bytes
SHA-256: fa5c35bd4426ece1b8817e262dcee6ab3d111d9856d98a0b5b9b07e213ca33e4
font_02_sfnt_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 11852 bytes
SHA-256: 34e5764ba02ff06c8c1709c11b52f836e66d37df5a947e795e9a0b777e529dc0
font_03_sfnt_off0001156e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1156E 16340 bytes
SHA-256: 8b981a3991537413864ccd898fd2175e3930846880761c43f8644faf49b48a61

Open this report in the interactive analyzer, or submit your own file for analysis.