Malicious PDF — malware analysis report

Static analysis result for SHA-256 c233b84111c03f11…

MALICIOUS

PDF

261.0 KB Created: 2022-04-28 21:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 0f563701b8f0c287b9de227da3073a40 SHA-1: 5f802a7dc0be82fe7562e29e4f123ec7825de1ae SHA-256: c233b84111c03f118a35323560f3e203b0ddda6a2637f96b4b313aaf2c1d1fd1
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains an embedded JavaScript stream and an external URI pointing to a suspicious domain, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary goal appears to be redirecting the user to a phishing site disguised as information about 'chania airport arrivals'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8006

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://lovig.co.za/XSRYdR1H?utm_term=chania+airport+arrivals+information
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/eed593011253db3ca427a52e1fd60f24/83863209051.pdf
    • https://nitiduzumamojas.weebly.com/uploads/1/3/7/5/137506598/wenux_lijuvoditiz_zomeguvisejupug.pdf
    • http://profesniprukaz.cz/ckfinder/userfiles/files/wewuku.pdf
    • http://architecturalconcept.be/kcfinder/upload/files/68904296305.pdf
    • https://gsc-tw.com/userfiles/file/dulusuz.pdf
    • https://zegaturivelegob.weebly.com/uploads/1/3/1/4/131437779/pubuz.pdf
    • https://juzomewe.weebly.com/uploads/1/3/4/3/134350864/6464327.pdf
    • https://zitozujenuzudip.weebly.com/uploads/1/3/4/0/134042901/d91a6.pdf
    • http://struna.bg/admin/kcfinder/upload/files/xugef.pdf
    • https://lisesadavageg.weebly.com/uploads/1/3/1/4/131438313/2606189.pdf
    • https://sizomarep.weebly.com/uploads/1/3/4/6/134660226/lererixipepap.pdf
    • http://stihoplet.by/upload/editor/files/jupujidu.pdf
    • https://www.systemswecare.com/admin/kcfinder/upload/files/61277093865.pdf
    • https://supratrend.hu/images/fck/files/1842443204.pdf
    • https://bizutuje.weebly.com/uploads/1/4/1/2/141252826/831313.pdf
    • http://harmony-stone.info/js/kcfinder/upload/files/51415796116.pdf
    • https://xenonomexe.weebly.com/uploads/1/3/5/3/135386884/7782580.pdf
    • https://pabitunevogozut.weebly.com/uploads/1/3/0/7/130776295/jusoxi.pdf
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/65129741545.pdf
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/getozabolivozomizo.pdf
    • http://fine-cottage.ru/userfiles/files/48837232874.pdf
    • http://emanuelarombiarchitetto.eu/userfiles/files/18864648117.pdf
    • https://proxus.nl/file/wotoniwuzatinozuguxabuga.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624781f59ab50---zoveju.pdf
    • http://melabo.com/upload/files/69858667840.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://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_off0003a98b.bin
dd8988fc15d6bfd34a615da45733d4f0dea8b15141e846247bf8380e13870a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A98B 16908 bytes
font_01_sfnt_off0003d532.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D532 16792 bytes
font_02_sfnt_off0003ed49.bin
6530bdcedec68a3b792f13d8255f4ff3f9aa8c110bc4a47875c879b0166a88ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3ED49 10588 bytes

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