Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e0347501dee68e…

MALICIOUS

PDF

125.7 KB Created: 2021-09-05 15:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-16
MD5: e80994512e8d9d1907f5939349aeb239 SHA-1: 7536808f9c6f8010981b6eca8bfe0220dceb66e4 SHA-256: 12e0347501dee68e62ab0cfd73ea6f52572eff5cc36bf69d821ef699ab4d3135
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains a link farm pointing to multiple compromised websites, likely serving as a distribution point for further malicious content or phishing pages. The presence of external URI heuristics and link farm indicators strongly suggests a phishing or malware delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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 https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608837c2a911b---wedafolezabirir.pdf In PDF document text
    • https://somogyplusz.hu/files/51126708385.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103091da5e3a---gajidokebageromadag.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/kujeboxuvoluzevavemopi.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/478aad1322433b3695268117bcfe43ee/5888060019.pdfIn PDF document text
    • https://dunakanyarfesto.hu/ckfinder/userfiles/files/tejodojukoniriz.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/a55b88d4acf8cd236809723a5c639762/sijupakitena.pdfIn PDF document text
    • https://trouver-une-ssii.com/img/pics/files/sogilegaroboji.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e71ab6688---63000599866.pdfIn PDF document text
    • http://soundspace.eu/Upload/file/majizezimagagugibepe.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/1kl4dionn24sabim35svstf8kn/1446718176.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/88955324352.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/2d83764ae9438ee46db77c813cf0ce0e/xolepofelatexedenezo.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a8ac2eff6---79650564517.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/0f58e16486dfdcc393b0728607db140a/26506027154.pdfIn PDF document text
    • http://gorod-r.com/userfiles/file/20102484088.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/0ea1760d9ff2ce4869460a94bcd88a67/fizarememix.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092b269b3e5b---74529626940.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/e50df50285d8b8b06711cf9451c65442/nijidemasipuze.pdfIn PDF document text
    • http://zeroseistudio.eu/userfiles/files/vevobejejobaguxuxenado.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160758cd91ca61---14252826458.pdfIn PDF document text
    • https://clubelsendero.com/img_pag/file/70835856157.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=airxcel+48000+series+manualPDF 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_off00018091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18091 21812 bytes
SHA-256: bfce3de75f1768009b4287bf5f0efc8a1f592ed536245c584168b1b4159adda9
font_01_sfnt_off0001b809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B809 10764 bytes
SHA-256: 6e8a56820d8c440e4a2bc3715242b4793d48772dc40fb0578f9e726fcde79397
font_02_sfnt_off0001d0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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