Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c70547b94446d4c…

MALICIOUS

PDF

65.4 KB Created: 2021-09-23 11:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 1e24b24156c8c71393f130bd4a64ec9d SHA-1: a07f0911ee7fe6da64fdd030dfabf5c1d29f9fae SHA-256: 2c70547b94446d4c074e3eb04331a088b19b8f0a642617cecf48bf166f273499
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document, potentially leveraging embedded JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9575

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 https://profesa.net/userFilesfile/puzapasugetarodanafan.pdf In PDF document text
    • http://zap-interactive.com/uploads/files/xawava.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/lutapofedexofizesi.pdfIn PDF document text
    • http://karinameal.com/imgdish/files/52500118561.pdfIn PDF document text
    • https://deltarents.com/upload/ckfinder/files/66004533333.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/dorimunefoma.pdfIn PDF document text
    • http://defhjdrjioo.friend-match.com/upload/files/rikivaxeteje.pdfIn PDF document text
    • http://griesvoegwerken.nl/UserFiles/file/5145327013.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614012a209a79---tufurefimevobike.pdfIn PDF document text
    • https://ahl2005.com/ckfinder/userfiles/files/69826952936.pdfIn PDF document text
    • https://people11people.gr/uploads/File/xedin.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613776eb70671---31320102299.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/64aab57108ad808f28f1b81f7689d934/35079975824.pdfIn PDF document text
    • http://gordostcrista.ru/userfiles/file/bilebuvokivo.pdfIn PDF document text
    • http://xn--90aoj0agf7cq.xn--p1ai/uploads/files/fewoziguzavezudevidare.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/c809bdd1ba71f5ad2f7affa12db1d9f0/21323420998.pdfIn PDF document text
    • https://gberwanda.com/gbe/useruploads/blogs/files/fokasebof.pdfIn PDF document text
    • http://shqinze.net/admin/upimg/file///55604214003.pdfIn PDF document text
    • http://www.stadion-zarya.ru/ckfinder/userfiles/files/sifefopavegemineru.pdfIn PDF document text
    • http://jinsonmetal.com/Upload/file/mizuza.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161411de5f0205---97400088527.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=fake+gps+pathPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CF 17396 bytes
SHA-256: 774bfced58209f4a40fa5aa97cdf48cba9fd7478c726d37e3c850b66fdc44916

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