Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb63f0f6cbb6eaad…

MALICIOUS

PDF

65.4 KB Created: 2021-05-03 12:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0998894adf06cec0985cb6d52ea04c1 SHA-1: f84eb5f9c28da7c21629755e45e909458830e3e0 SHA-256: bb63f0f6cbb6eaadc2638f7388d6ea91b2ab62978f0436231c61e607add5e218
154 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. ClamAV detection and ML classification strongly suggest malicious intent, likely for phishing or malware distribution. The presence of multiple distinct hosts and the use of disposable hosting further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8766

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://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/a6f5978fba7df09ee2d9888e1c19c7fc/28677943848.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/1dbff313f3bfeb1660739470a4ef78f8/36356026436.pdf
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e12bfd24b8---gezomitifuwofafutejutuput.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/04cf712f12b74467a11783c8a1257e1e/25457347871.pdf
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b165743120---82519310798.pdf
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160738429f1164---janux.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607191aee1da3---sogiwinefidazekavagus.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/a82b5ad81f51343af729c06963c8d2e8/28005197981.pdf
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/usbh6prqvlp615bs3lpr9n0esp/gekumepuwaxam.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855ecf7bcef---75742793203.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/ada6d3b7b76548dea500dca31092ae86/84429646477.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b2b679e5a725d03640d29f6902a0dbff/tejifikutijipobugoned.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2b5291ae2---37522263217.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/59d6013c6c90b8fbca437d6f773e9123/tapogel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=beetle+house+movie+song
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4d6.bin
3a1b6fa5e71d12d38945f3246c7b32ba2f5f5a1f4ac4773da26ce8b97890a5e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 4904 bytes
font_01_sfnt_off0000e56f.bin
aec0f687caea2571ae0270e8b097e19a0811aba1a15083e990d0eb4296a70371		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE56F 11036 bytes

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