Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ccfe27c933672d8…

MALICIOUS

PDF

202.1 KB Created: 2021-08-03 07:09:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: 899f22c9eedf28428ad8d0802e1925a2 SHA-1: bc2fb4d7574adc608fb079d42c7063386e9f2ce8 SHA-256: 9ccfe27c933672d8391c6237d2e2fb209c5f935e98e788b53919b595784b9073
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised WordPress upload storage, indicating an attempt to host malicious files. The presence of a 'download' button heuristic further suggests a lure to trick users into downloading content. While no scripts were directly extracted, the PDF structure and heuristics strongly suggest it's part of a phishing or malware distribution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7257

Heuristics 5

  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://aucordechasse.fr/vosImages/15203264723.pdf In PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/u8iond0smj0101n07vl7ria70e/kibuseg.pdfIn PDF document text
    • https://bawwabatrizq.com/userfiles/file/sesukem.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/32852711190.pdfIn PDF document text
    • http://berbun.com/user_img/file/20639163483.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/14973467387.pdfIn PDF document text
    • http://yngc.ru/admin/ckfinder/userfiles/files/pugujuxavosoluwezesibuduj.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/d19gdtld0n6pl99ut29jb4bl42/xofesofubigawutefepenoluk.pdfIn PDF document text
    • http://msiutilities.biz/documents/jexepigi.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/zatazigumadovixez.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/r5ro6nh70ej047las3n8pej5rk/morugokikudomurusafe.pdfIn PDF document text
    • https://sportuna.be/ckfinder/userfiles/files/72013422041.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/36815447562.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/32da3rel44o8hq1vbo5keldndv/45128933646.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebd5764370---nivipin.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/72384624667.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c164a5d14---5898496397.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16084ad7113cee---lirukimuvonokus.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/a558ea7802681f343966d31e6fc2ac10/fugakilakado.pdfIn PDF document text
    • http://leasingtowers.com/ckfinder/userfiles/files/38593981169.pdfIn PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/38095a65461d5991afcce320248014b7/60609537874.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b7a7bbe48e---3340741652.pdfIn PDF document text
    • https://lecapsuledigian.it/file/tujowosuzoxo.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/atqmcaar2tj2j5f11vdsvd8iuc/valesobujapaponodibe.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087df3fa33f9---3207799966.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/a233b283f8f5814fc1d44661f6805524/xafiridofukufup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=windows+server+2008+r2+service+pack+3+downloadPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off00028fc5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x28FC5 16844 bytes
SHA-256: 36a096bed8c996a9ad3862599ed19c1192a675e7eae6e37e6261b84362292934
font_00_sfnt_off00027c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27C74 5256 bytes
SHA-256: 65b6947f885ef50bf969e42f79ade24101a7991146c7b03dddd975121d01384b
font_02_sfnt_off0002a7f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7F9 11268 bytes
SHA-256: 7f52d80e32a269e1cc189fb4ca3fd099445491f3d630ae234806309863a7767a
font_03_sfnt_off0002c29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C29D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off0002daaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAAF 23912 bytes
SHA-256: 5721374e9eb43721dc21e51e51e2c486b13812e5722c326ac09869455fc522cf