Malicious PDF — malware analysis report

Static analysis result for SHA-256 473436ffb97b7e4e…

MALICIOUS

PDF

86.5 KB Created: 2021-06-29 23:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c3e4c628465eaa1db10c64cb4b89b33c SHA-1: f09f5dc1f83d80ebc8cb77218526d4b7c4112dd6 SHA-256: 473436ffb97b7e4efe6a0bc97e61909a66c515602d283baaee1254ced2aa8453
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains numerous embedded URLs, many of which point to other PDF files hosted on potentially compromised websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of multiple suspicious PDF links suggests an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 http://archerelectricsupply.com/userfiles/file/59089207104.pdf
    • https://lamaisonducoeur.ca/upload/editor/file/59919944523.pdf
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/gjjdoc3bcgvjvcd5q95d1fe0m3/28517956150.pdf
    • https://mujeresenmovimientoplus.com/userfiles/file/jefefav.pdf
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16072dc51c3fe5---33659336100.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b84e8b7923f---lowepaxijapipuweli.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/k1f7lvmjnrr7l1q6f35d3h0rvv/34086775145.pdf
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c5f59a4eb4---44337377706.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/77d53b323eef1cb99d9b445063b1b6a4/61389038507.pdf
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/9ec84f136d12a31cf187d5fa6d34dcc5/2885478400.pdf
    • http://wjvanderheidedienstverlening.nl/uploads/file/86674296580.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16076869af4149---99440840692.pdf
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4db1c16ca---fupupagu.pdf
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3614496b9---6009923260.pdf
    • https://isosklo.cz./uploads/21825955719.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae37a758c25---ponisomeweboruxim.pdf
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/9b7c3119d8a48571dc3c2113eff9fcfb/tabidu.pdf
    • http://www.asslar.de/downloads/33503861965.pdf
    • http://ekotop.eu/userfiles/file/gupexokokixosugosafomub.pdf
    • http://fotossc.pl/_files/file/67669580544.pdf
    • http://jonkmp.nl/img/cms/file/zogogusizoretibemimok.pdf
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/8d1hondk0fmoodci30tamd8627/mixadonaf.pdf
    • https://facades-et-traditions.com/actualites/file/34592151605.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=making+soap+from+old+soap
    • 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_off0000edbc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 16792 bytes
font_01_sfnt_off000105d3.bin
c079bc94565b60fefa4c97a0cb354b05739cf8e76aba79466900eb4275a0a42a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105D3 10696 bytes
font_02_sfnt_off00011e0c.bin
36e75818af6c699c351845d473e4db4252bd7cdbac6f40de6886473668278429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0C 17844 bytes

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