Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3317f6ddf1b4c1…

MALICIOUS

PDF

64.3 KB Created: 2021-06-03 17:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5114db7af4b6bb12cbfe5f8c8aeaa146 SHA-1: c3f0e21d60619491b4a4a372c381482169251d18 SHA-256: dd3317f6ddf1b4c19d9fa851679543eaafc06527515c3c9e3ec1d3355a8c1a05
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains a link farm pointing to compromised WordPress sites, likely intended to trick users into downloading further malicious content. The document body, though heavily obfuscated, appears to reference a 'Samsung tablet factory reset', suggesting a lure for technical support or device recovery scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9776

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://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/rlmpqdkjntiqg204d9g7n8ui36/52878526135.pdf In PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090b6113cd0f---pizezutexifopaz.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ad9a06c06---ratosijamorarefubagazep.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070189bc9a89---lefiziripeji.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2bcc66610---radir.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/1ec8f461383821de445dc1e1b9e3284a/15924192167.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9d3a2c64e---fedujesunonuxe.pdfIn PDF document text
    • https://carlojans.com/cms/file/lobavuvipivuxikomelifas.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/5cfb1d660d8a9c8c826fdd58f4031ecc/ruvaxekazejepajevoduk.pdfIn PDF document text
    • https://anfauglir.com/images/file/rojatosog.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607126d100a4f---fepor.pdfIn PDF document text
    • http://wrtour.com/FileData/ckfinder/files/20210531_809C5F46741E1E10.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/lb53ie8ml1v8ftkg5ad95hn5m6/jozupokegekalipizofaxipi.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/qe21r0us5308852bpshhi8d8na/45761995915.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/fb1omkk6mhnuhvcj6vejok1fl0/levixokewival.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160a9461fddb2d---26502267183.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=samsung+tablet+ce0168+factory+resetPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E8 5924 bytes
SHA-256: 61dd5f05536a3ec880b88d377c7285ed00b0e6c3d0dafb95dffc7a2a2705fd0d

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