Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abc867ac4f56ea2…

MALICIOUS

PDF

63.0 KB Created: 2021-05-29 00:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d64500af552e2b0846f44098833c7ab SHA-1: faff8c02c0e975afd7435ddd3296a21682c7f394 SHA-256: 9abc867ac4f56ea24cb7c03e057f26661bac0279c973f04c6b502ee173faf855
154 Risk Score

Malware Insights

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

The PDF document uses a lure of '50 receitas de geladinho gourmet pdf' to trick users into opening it. It contains numerous links to compromised WordPress sites, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1b663e2ca---75067164247.pdf
    • http://ngor2-3.com/file_media/file_image/file/mugakokedunesowaxifeva.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/o70ccsjs22h92mufv35l5ainpr/zipadonatilemobaxok.pdf
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/c5be537ca5a8b793af3b5267e0d8e9eb/7013402195.pdf
    • https://atlastoursntravels.com/userfiles/file/gonazifififulapob.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/a7d413a2af45e16eea15ae38108ed3ca/69288873796.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609427d5d6077---53177661184.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/66d5182493898144257be20f5e09028c/rejijeb.pdf
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef459dae78---36221014673.pdf
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/d8856a9847bf6323172f4b537e6c5e02/28751847760.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/ns1m5rjf73khgf7631b4be4na3/takedewenulorot.pdf
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088c328434a7---6160944332.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/b558bb847788fb054f525319554b937a/zedizapazomemafovide.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7f4f18a58---57632934622.pdf
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5947522c7---37477622761.pdf
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/3onbmsik1o18ijs0e2g0bl7ka0/12922929309.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=50+receitas+de+geladinho+gourmet+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd67.bin
4edb8e63c2310fb6c984c94e4020a7fbec7c90698f83954ed70d067ef3c81d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD67 5740 bytes

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