Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb0b85225673ea7…

MALICIOUS

PDF

317.9 KB Created: 2022-06-05 00:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: c94d666d7822ffbb72f519ba14e39360 SHA-1: fb42df206714c0207f8e5933664f24298b2dd48a SHA-256: dfb0b85225673ea7fed92b4c52c7ad073cbc525eb61e734c06feedff70c8e5fd
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, strongly indicating a phishing or malware delivery attempt. The ClamAV detection and ML classifier further support its malicious nature. The embedded URL is likely intended to redirect the user to a malicious site to download further payloads or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7501

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=cambridge+collocation+book+pdf+download+full+game
    • https://sagetiruguw.weebly.com/uploads/1/3/0/8/130814856/7574168.pdf
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/3aa2177aabb13b1c591a758ce2fc14fb/bosaxanofed.pdf
    • http://zsmnowakowski.pl/userfiles/file/bojesefiteju.pdf
    • https://rivinelamaramu.weebly.com/uploads/1/4/1/5/141502389/famozi.pdf
    • https://rejasujewefem.weebly.com/uploads/1/3/0/7/130738882/xebamonevemabixuruma.pdf
    • https://mulubumulofunis.weebly.com/uploads/1/4/1/5/141539759/tujineri_jisolu.pdf
    • https://mandarinkinesiska.com/userfiles/file/kerizibopagerivomudi.pdf
    • http://jyjwqj.com/uploadfile/file///2022051502511189.pdf
    • https://www.coopi.org/admin/assets/js/ckeditor/kcfinder/upload/files/files/pupukadixesojuzovopidiku.pdf
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/d174a74636e3db89157b373075c5a781/xolemiruzonofazeneju.pdf
    • https://lawejufezokiw.weebly.com/uploads/1/4/1/5/141596708/4918113.pdf
    • http://yljinbiao.com/admin/upFile/2022-5/file/zatupu.pdf
    • http://sportschoolindex.nl/images/uploads/gusutegavoniniku.pdf
    • https://jepusujejo.weebly.com/uploads/1/3/4/5/134598091/7550592.pdf
    • http://noithatlekhanh.com/Images_upload/files/kalupogixose.pdf
    • https://orangevelodrometrail.fr/img/uploads/files/52031318857.pdf
    • https://vujolixube.weebly.com/uploads/1/4/1/6/141693906/rekokiwinanubarege.pdf
    • https://xigokujote.weebly.com/uploads/1/3/4/6/134649591/22588.pdf
    • https://centralcms.coodex.net/galeria/files/89196263376.pdf
    • https://pevetogebika.weebly.com/uploads/1/3/5/3/135335423/wuvoraromenimalozet.pdf
    • https://www.eclof.am/assets/ckeditor/kcfinder/upload/files/wezomamimejowaluk.pdf
    • http://hdurmuslar.com/images_upload/files/9820245506.pdf
    • https://mojurakikaluno.weebly.com/uploads/1/3/1/4/131438245/5962366.pdf
    • https://rivibufoxaz.weebly.com/uploads/1/3/0/7/130776478/xurola.pdf
    • https://nizirukubarilaf.weebly.com/uploads/1/4/1/2/141260001/7597353.pdf
    • https://pisefipekopaz.weebly.com/uploads/1/3/4/4/134461515/jaxemelebum.pdf
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/pukoku-joliwolu.pdf
    • http://envisystem.com/upload/userfile/files/35859179750.pdf
    • http://herborgthailand.com/file_media/file_image/file/firoxux.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_off0004862e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4862E 16792 bytes
font_01_sfnt_off00049e45.bin
1f9d52a68a703473fd0b419051ddf31ccd3c472bbbf1dfc7a79404973d237fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E45 11244 bytes
font_02_sfnt_off0004b837.bin
493640257056f8784ec4e4c1bf4fb7418719e2de6d3f70cab76c4153f38aacb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B837 18412 bytes

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