Malicious PDF — malware analysis report

Static analysis result for SHA-256 c961d97494166de3…

MALICIOUS

PDF

66.5 KB Created: 2021-06-21 03:27:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e8f31d052ca3dcfb54f5372954138075 SHA-1: 275090a384ca482f9283d54d1e0170e4cb2841d8 SHA-256: c961d97494166de35d2e6a4bbf985a9e623d5cdbfe7d97dc02d30c0255b1dd2c
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to distribute further malicious content. The document body is heavily obfuscated, but the presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9729

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://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1292a494d---roberaxeli.pdf In PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/13fad5ae514f8f15a0cc6b0bbb47219e/sejoxatetix.pdfIn PDF document text
    • http://davidlbrooks.com/clients/868292/File/17638942406.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/59425326263.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/laxeromajavezagakak.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/tonod.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aafb682cecc---2800031220.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d916350085---26475907886.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/63943732064.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/dda00a21b17a87ad5ad0847758a77521/85349729346.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/kjkd7fb2qf6oe6pe5lo2b7938j/jolazuwedasefalabiledovu.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/fobufojeloporir.pdfIn PDF document text
    • http://texmet.pl/userimages/file/70821860412.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/09c18284032ed6de079f71da76a81503/lirubinarigugu.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8a45c2f8a---97042828670.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/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=indian+movie+sultan+downloadPDF 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_off0000e21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21E 4964 bytes
SHA-256: 26a2413b5a1a3677a33c5454f8fe363430d7301e3dd6f427d19b43e53b15e72f

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