Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a75dc4726f5a22…

MALICIOUS

PDF

63.5 KB Created: 2021-04-30 11:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 759e967560fce4db4725b6f7e635477e SHA-1: 0fd8a2c814e0ecd720b52ea5616ecf20de5344ea SHA-256: 30a75dc4726f5a227fc66a3c5f8c5687c1b8804fcf4f8a3173f8f36abf343bd8
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS platforms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and link farm suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8681

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16087ff10d6ed9---55592110319.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160727e20734c5---sinewere.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081f3fa7098f---98972404286.pdf
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/0e57d6fff6579fe1a544288ae6d67515/60182554827.pdf
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607182ce5b68c---redoganewirozivakoja.pdf
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/igkgmntmo2gt6564iu6r4eel56/74076373341.pdf
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/938d974b857cfc90005ac0cd8db5897b/5773767168.pdf
    • https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077235b5b847---78703587198.pdf
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdf6b80801---20002010106.pdf
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/cmsevcsh2cu71i80uidhm4jbkd/zonuj.pdf
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890ba6d9746---56794256978.pdf
    • https://thedestinbeachhouses.com/wp-content/plugins/super-forms/uploads/php/files/14f5864af0132eac714954a81b3edd32/zabikudevosajob.pdf
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/114cfb5811b527553b92a17b583a74d2/20179393152.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/5e4591eb632b4240957384e627d6a370/gulegivaviluvaxiwug.pdf
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/9b96983b8b4482065a96c4151512d73d/67422045604.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=pwc+digital+ad+spend+report
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dedf.bin
f37153512d8a855cf0e3dd8fa7357f927286c5e3d082552997cbf45303a04db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDF 5332 bytes

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