Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec2d35bcdb1b153…

MALICIOUS

PDF

81.2 KB Created: 2021-09-09 14:35:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5277713b5a9e7d56340b649fbc01b33e SHA-1: 5aa60a33adf4ecb7cacbb22c74de1086205cd7ec SHA-256: eec2d35bcdb1b153cf93891c5a2cc91cb6e0e66a78dadc490e66fd6e487dc76a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics, along with the ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION firings, strongly indicate malicious intent. While no scripts were directly extracted, the structure and URL patterns are consistent with a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://www.farmaciavictoriayjmleon.com/userfiles/files/xanawapin.pdf In PDF document text
    • https://losungversorger.com/product/file/mawanova.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/161300c9d3404f---dosarifokil.pdfIn PDF document text
    • https://mandarinkinesiska.com/userfiles/file/55308212133.pdfIn PDF document text
    • http://ttlh.vn/storage/ckfinder/files/32917957433.pdfIn PDF document text
    • https://alley.52886.tw/uploads/files/dukomapi.pdfIn PDF document text
    • http://stavebnevyrobky.sk/www/upload/files/pulafevaweliko.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/6500c65a2552608acf70211b90935156/87382244564.pdfIn PDF document text
    • https://cplastik.com/data/cms/file/jezifag.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/misiwagelatajotawaza.pdfIn PDF document text
    • https://arerp.kr/data/file///74484379339.pdfIn PDF document text
    • https://italvaping.com/file/faputaxejilekorokej.pdfIn PDF document text
    • http://my-hustle.net/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/teselovuxenepidirire.pdfIn PDF document text
    • http://edv-denk.com/userfiles/file/54906508775.pdfIn PDF document text
    • https://martabaktelor.com/contents/files/namipitokexasolenifadagi.pdfIn PDF document text
    • https://expomediainc.com/upload/file/78967613543.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/34796096556.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310910d4ac1---mubetewopekumezamib.pdfIn PDF document text
    • https://escaletravel.com/userfiles/files/bumepova.pdfIn PDF document text
    • http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/38152887248.pdfIn PDF document text
    • http://iucecb.com/files/file/nimimamijebisoxig.pdfIn PDF document text
    • http://viorina-deko.com/images/file/gibirusosijoti.pdfIn PDF document text
    • http://balcimimarlik.com/resimler/files/42649788328.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/userfiles/fichiers/43088275007.pdfIn PDF document text
    • https://cosonnguyenthanh.vn/webroot/userfiles/files/67680944722.pdfIn PDF document text
    • http://adice-area.com/pictures/files/90568768981.pdfIn PDF document text
    • http://www.yeosung21.or.kr/ckfinder/userfiles/files/1630635360.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=hotstar+free+premium+apk+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B9 18092 bytes
SHA-256: d4a871e150ccf9e1d7f2646a06de44ef8cf85612ead872434e2935f929e63351
font_01_sfnt_off000105ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BA 10928 bytes
SHA-256: ae7834d678a1b22c57c3c3261318eacad9c899af55ac29b11fb63ed51e089237
font_02_sfnt_off00011f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.