Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60e7f4e21d5836d…

MALICIOUS

PDF

70.1 KB Created: 2021-09-15 23:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bfbf365ea942f4015be6bda49d7c9eaf SHA-1: 31255ff3f4cba76cb5008aba07f25bb536a8d9f3 SHA-256: d60e7f4e21d5836da1af25359796b03f38832dac4f71e41cbaae3fc3536290bb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of links, many of which point to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs suggest the document is designed to lure users to external sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6872

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.
  • 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
  • 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://geosond.pl/userfiles/file/26687165972.pdf In PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d8f1164c2---35202956892.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/5006c9e02583b5e383b14fb5ca5b532e/wuvoripenoxanokawatumexi.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133844c1d66e---32778027264.pdfIn PDF document text
    • https://www.delaneyllc.com/ckfinder/userfiles/files/10651104802.pdfIn PDF document text
    • http://fusiongrup.ro/userfiles/file/774330181.pdfIn PDF document text
    • https://bhavanarayanaswamy.org/userfiles/file/62459286998.pdfIn PDF document text
    • http://mjengo.org/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/gerezoxegepajosumegovax.pdfIn PDF document text
    • http://box8websites.com/ckfinder/userfiles/files/fibed.pdfIn PDF document text
    • http://mebel-moscow.com/content/xuploadimages/file/zexubegabikito.pdfIn PDF document text
    • http://myphamhelios.vn/luutru/files/tifasesepobaxutemaj.pdfIn PDF document text
    • http://jrecchina.com/ckeditor/ckfinder/userfiles/files/38810925770.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/4a92c0eeb326fd591d11a7b33717b443/bufutuji.pdfIn PDF document text
    • https://pakistanchristiancongress.org/userfiles/file/10318572104.pdfIn PDF document text
    • http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/66146694661.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/tixesunarosikigokoxi.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161388c13e2039---16550440373.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/37564548128.pdfIn PDF document text
    • https://digireg.at/upload/gemuxisulirorumupixo.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-9-2/20210902220826153297.pdfIn PDF document text
    • https://www.playitdirect.ca/ckfinder/uploadfiles/files/37659193372.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/gufuz.pdfIn PDF document text
    • http://rpsbchamber.org/editorData/file/60966531822.pdfIn PDF document text
    • https://gfwofficial.com/ck_imgs/files/58519240889.pdfIn PDF document text
    • http://dayou.tw/uploadpic/files/202109110401257596.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=geothermal+power+plant+flow+chartPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DF 10612 bytes
SHA-256: ab926c3663ccd8025838f3d48da476adbf2fb3e96fe33f590b17eb9552c1714f

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