Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32725cd2749d2f2…

MALICIOUS

PDF

78.7 KB Created: 2021-09-21 03:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: aef1f5f8b6c2ab375f481acd49ea6b8f SHA-1: 93a0980b7ac51199fc2892c1d20af3278fb895f4 SHA-256: d32725cd2749d2f2a2a678f56ede38d239e996303d45e8c38e686fbc383c0fbb
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_CLICKFIX' heuristic suggests the document employs social engineering tactics to trick users into executing commands, likely to download and run a secondary payload. The numerous embedded URLs pointing to compromised WordPress sites and other domains suggest a link farm used for hosting or redirecting to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141301336b9c---36773014950.pdf In PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613afee8a7614---nigafetuxibovafopoz.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a16da491a0---81325144950.pdfIn PDF document text
    • http://madiagranitosilano.it/userfiles/files/9784060018.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/25582202039.pdfIn PDF document text
    • https://millersexpress.com/userfiles/file/50734472328.pdfIn PDF document text
    • http://ferrocom-spb.ru/userfiles/files/11256989031.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210910085700.pdfIn PDF document text
    • https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/vidotamodalejakitus.pdfIn PDF document text
    • http://sun-green.nl/ckfinder/userfiles/files/30893155483.pdfIn PDF document text
    • http://italy-ex.com/images/blog/file/72226129230.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dff569f6c8---zirelozerovevurodib.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/8789435154.pdfIn PDF document text
    • https://distriparkbotlek.nl/userfiles/files/pavenogesuropesolifekol.pdfIn PDF document text
    • https://presstone.hu/userfiles/file/nafot.pdfIn PDF document text
    • http://sinhorelli.com/userfiles/file/98042452170.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/sofaburikiwolizulorivud.pdfIn PDF document text
    • https://tradingphrases.net/userfiles/files/75224846677.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/bugovisurosatofiluwigakek.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329133cfb43---90509948704.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a7b886f58a---12188876403.pdfIn PDF document text
    • https://limsurdua.com/contents/files/83688014853.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=wifi+icon+missing+androidPDF 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_off0000d11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD11D 10536 bytes
SHA-256: 3707a032f6a34f40a1492d960d6bd8e28c56e18c8d8ded8c4c52e084e02ad017
font_01_sfnt_off0000e8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000100f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F5 17072 bytes
SHA-256: d34556bb62c752b6b91a22b37c331659f0bcf5b47e789120975166a788afb8f1

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