Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a0cabe222752dc…

MALICIOUS

PDF

212.5 KB Created: 2021-08-20 11:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ac5147e6929ca4fda0793ae24df8db3f SHA-1: c7d7e864c4f3d24084d36480fb9318638543895f SHA-256: 10a0cabe222752dc18136e6a6992e92a30c87a846cf428b8d682ac54cc3c83a6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of a 'PDF link farm points to compromised-WordPress upload storage' heuristic indicates that the document likely contains links to malicious content hosted on compromised websites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9671

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
  • 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.
  • 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://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16084a98817cb2---dedos.pdf In PDF document text
    • http://blankheich.de/images/uploads/file/magoxu.pdfIn PDF document text
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/74362463138.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/b03e009790d3d6a92b2dd7d602295096/poxanulixuzi.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/58391078020.pdfIn PDF document text
    • http://akifkasaboglu.com/esatfisek/images_upload/files/dagosevobufodikedebegemaj.pdfIn PDF document text
    • https://derfo.info/resimler/files/jabuxexavegimu.pdfIn PDF document text
    • http://digjamaica.com/app/webroot/files/neloveguwewus.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/70202554619.pdfIn PDF document text
    • http://oikoscoccatoarchitettura.com/userfiles/files/nudeduvuveza.pdfIn PDF document text
    • http://vimar.ua/userfiles/files/39567101402.pdfIn PDF document text
    • https://jotekonybakterium.hu/userfiles/files/litosagefomijop.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/tejilujemev.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/92818404514.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/d05ba7e5deaabdb4ce152b6423a7e6ad/fopejokakitumaw.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a97a8efd6f---kumoban.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160967cdb61b4d---44593493656.pdfIn PDF document text
    • http://bjjiffy.com/upload/94285473509.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16083a7e89f880---12599625165.pdfIn PDF document text
    • http://mc-opony.pl/files/file/zuwep.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095cf22ae084---rutapatukoselafogoni.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/95108425863.pdfIn PDF document text
    • http://kolkandkolkdesign.com/site/data/ws/files/94112815061.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/jawimepabofomigido.pdfIn PDF document text
    • http://eis-pieschel.de/UserFiles/File/58303911424.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=limit+ayt+edebiyat+soru+bankas%C4%B1+yorumlarPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002df0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF0C 19708 bytes
SHA-256: 3e3f3820a215639178396110ca48a4489cd9dad4deeccdf011c726e56795bd0d
font_01_sfnt_off00030f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F7D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00032794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32794 10856 bytes
SHA-256: fa62e34702952cc4a00b32a9e1de3aad0c7f22876ead42a6565ac1e61cb489de