Malicious PDF — malware analysis report

Static analysis result for SHA-256 574553e8e87f3068…

MALICIOUS

PDF

87.1 KB Created: 2021-06-30 15:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dddb86b33e0880150aad6b1be2f34ebe SHA-1: 4d2be9ac6ffdaaafff820cb83df68063bd1f8b94 SHA-256: 574553e8e87f3068251751c13eb299a9c9c1117a1549828abc366a9f4464cbda
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a "download button" heuristic suggests a social engineering lure to trick the user into downloading a payload. Several URLs point to PDF files hosted on various websites, likely serving as the malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a114d27931c---40009255998.pdf
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/16084bf1c4213c---83238622028.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b4e9e5a6781---69989498061.pdf
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/a6161facd7879f1bf76d376792d8b310/kagojaw.pdf
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608565d01dce3---jebemevu.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/bv1o5rr4iq7fpkejo528a09vt1/tabobegi.pdf
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/2e6bb72f004c20a003ab5ae1b6b93f74/44454771277.pdf
    • https://heritagecambodiatravel.com/userfiles/file/sizozugopom.pdf
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856babd8e47---pajuxigagoxifefata.pdf
    • https://premium-house.uz/images/file/77097807575.pdf
    • https://dejavuruse.com/userfiles/file/kuvixijevefasenofov.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/6420f779a378e01b5897735c1cae3a7e/10193115703.pdf
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a28532b4bb2---1684194403.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfba4e26a57---15915700378.pdf
    • https://www.foundationofhope.org/wp-content/plugins/formcraft/file-upload/server/content/files/16080c26969aea---subazu.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091194b2fff0---kipufegalozopidofado.pdf
    • http://herve-coiffure.ci/files/97409281535.pdf
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608458b4a60a3---tesebajopa.pdf
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/a56cba9166cfc5f2d60d3e9c00600c1b/moxisabogadave.pdf
    • http://finpacecuador.com/userfiles/file/jakizetupuwa.pdf
    • http://csc025.com/userfiles/file/20210628122524_pg2yre.pdf
    • http://doggystylzgrooming.com/admin/photos/file/58715140341.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714d78f1cd3---76859169098.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=best+pdf+scanner+for+ipad
    • 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://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_off0000eeeb.bin
868bda6c160a451b207981cde7e33fc89bdeafb09a639f2ff51217de84b51c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEB 10620 bytes
font_01_sfnt_off0001075c.bin
9bf45271fe42a2ec1fb1b90a55b353cbeac88174ce5cf5413565e80e69f5d196		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1075C 17980 bytes
font_02_sfnt_off000136ef.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136EF 16792 bytes

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