Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d3ff5e13ed79f0…

MALICIOUS

PDF

89.8 KB Created: 2021-07-02 17:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f18c645f0de890e886939ea6847511d3 SHA-1: 0b9503de3c100b8f44d709b6ad9aa206bef247c9 SHA-256: e2d3ff5e13ed79f04f6dbb68f320d37d62ff0a7bb931d5636ade17dc986c0c84
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by a machine learning classifier and ClamAV, which flagged it as a phishing trojan. It contains embedded JavaScript, indicating an attempt to execute malicious code within the PDF. The presence of numerous unknown external URIs suggests a phishing or credential harvesting attempt, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://grafichesirio.com/userfiles/files/nukot.pdf
    • http://ahchala.com/img/file/radidozodexogax.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/ks2ae4gpitk6nltcebnjvjh8lf/mapivitakonanu.pdf
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/vsoh4ftr50flk60nki9sdcibqn/69720490379.pdf
    • http://s8radziejowice-paszkow.pl/userfiles/file/99536950181.pdf
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c28fba0a719---foxozajedafujisomitep.pdf
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074cae1d681b---dijewebivosiri.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/72621e72856859dd24df6067fc207e9e/31249618600.pdf
    • http://lineshare.net/upload/files/20210702055050.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d2113ab80---57895990919.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/51177eabc59ea4ef5f4c9512b4b2e8e9/merujinerokawanokesaranax.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/03cce30ed60812b7173e1930ebeac211/zugakidoriwemado.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1d23ec6b0---22056276007.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d331489a2f---53680389391.pdf
    • http://slesnick.net/userfiles/files/65505798575.pdf
    • https://villatoscana-pi.it/userfiles/file/67007774924.pdf
    • http://kahounova.cz/userfiles/file/wobagukem.pdf
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/77235758303.pdf
    • http://servmed.net/userfiles/file/88542706055.pdf
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/5d2298a74b9d4d103cc32f3bbd710ed2/dapobagufalizigodemudak.pdf
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/5a9e7c2c786eb28a3757934422412d56/98254136054.pdf
    • https://registracijakoncar.com/webroot/js/ckfinder/userfiles/files/wajobimedaromet.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160898e22a7c33---samafara.pdf
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/b0a8ff6d1551b3660de37b67d9657ad4/natawigokewuporojun.pdf
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609618234fcdb---14801729127.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=5e+potion+of+healing+crafting
    • 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_off0000fcbb.bin
9a2967dc252d6069d1a2a1cec882dfef5a90d8c1768e8e0b2c701bb57b66ec64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBB 17236 bytes
font_01_sfnt_off000129a4.bin
630558418675bcb385074ed5eff13aa2cecaeb60743f9ce0470bd122382b224e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129A4 10628 bytes
font_02_sfnt_off000141e1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141E1 16792 bytes

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