Malicious PDF — malware analysis report

Static analysis result for SHA-256 477be0fc0b3564b6…

MALICIOUS

PDF

88.7 KB Created: 2021-07-01 20:12:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 269d6782b8d7cf3927bde674bedd8768 SHA-1: 42379590d46cc92fb7139336456e4724cba67c04 SHA-256: 477be0fc0b3564b6da1b5a378fcbb7dd9a62150adeadad44380e22f9e2a56bcf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to potentially compromised websites, suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect the user to a malicious resource, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608df9a39f699---povupuredatajavaxum.pdf
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/d5ec1c077957ee16b5c01b48005fe935/33912241209.pdf
    • http://solamsys.com/userData/board/file/zogidiri.pdf
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/eccbffb38b8631b7fd9997f41aa4a818/zabosilisovixel.pdf
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/47d43cfab8b0e2ee30a6bc1860cd13af/83322259052.pdf
    • http://enjoy.sk/editor_uploads/system/files/riwumule.pdf
    • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/sosisajaja.pdf
    • http://cmtdental.com/upload/ckimg/files/begopovoduk.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16084f7b50c5f3---sugopupulejexabet.pdf
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/eopfbpekue3nd3qidf1npgeq46/1400028379.pdf
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afda9f39225---8680950905.pdf
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/580ngfjt84qgu3rcnbpo5udd6c/7777980373.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb9f98c3b1d---poxukejukaduxujapo.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a2926041a10---17832729053.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/0c38d7db29951e67201342bb92af591e/60719356432.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb2f52341f---44554331909.pdf
    • http://ski-experience-japan.com/images/blog//file/36451766148.pdf
    • http://www.colormotion.cz/UserFiles/file/31436715752.pdf
    • http://highlandhighclassof1962.com/clients/c/c3/c330a44b04b080977bf299ea430a317d/File/59074455523.pdf
    • https://aduanaldelvalle.mx/userfiles/file/naneniwosopupizu.pdf
    • http://standartbio.com/fckfiles/file/koratosivojosuzutib.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/dc51f050c2a076ea9d317d6635273b4f/61917075740.pdf
    • http://ankurgroups.com/userfiles/file/31697915008.pdf
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609282ff8df27---lopovoberubikepep.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=most+common+spanish+words+1000
    • 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_off0000f610.bin
78ddc3b4fcf6a20c0d2fef4c7a731fcab11451ece31166db79a2251da30b90fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF610 17084 bytes
font_01_sfnt_off000122b1.bin
d996ed1ec80c7d3d6e291257e7290cbdd239db2344926b54a7e1789468ed48c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122B1 10856 bytes
font_02_sfnt_off00013baa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BAA 16792 bytes

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