Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae63d409eeb0e03…

MALICIOUS

PDF

69.4 KB Created: 2021-05-19 11:38:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e470181f78358f1579946a992b35030 SHA-1: 933faa1a97c8749f5fdb4c42d98b50bc47b60396 SHA-256: 9ae63d409eeb0e03aef0011467bf2d87d554fbf822da40a63498aaa1162f7f6a
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 appear to be compromised CMS uploads. The primary URL, https://nomylo.ru/uplcv, is presented with a search term suggesting a movie download, indicating a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

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 https://nomylo.ru/uplcv?utm_term=barbie+12+dancing+princesses+full+movie+free+download
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/s4j0tfs7cf2vq7t2m3350pq18k/98384241547.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef9ec76537---62010978551.pdf
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/a1sqq78cu1n461rk0tlfvht34k/47517721886.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803e70b38f3---97498302300.pdf
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/dph2g2o6pevb9km715llhsv5q0/73510805196.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/39dfacd3d488814b4819417f497eb911/32394103782.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606feae739113---jobetutibazi.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608722eeca3ac---55213423659.pdf
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ba9d9e9a5---votivatejegewe.pdf
    • http://brandnewgoods.net/userfiles/file/samekomarugojawevexexa.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/6c97f5fde329d66c66394b87778307c9/kojobizuta.pdf
    • http://ahkjt.com/upfile/file/68123709627.pdf
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097a17a5abac---6707736393.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609844a232ed2---24143196218.pdf
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609459e4b7e72---76557407208.pdf
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0c373c994---68478616633.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df9c.bin
8736fe321c2ec6dbc4f9c81f39a46b8d22ba0945b1f79058a76508f129866644		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9C 6000 bytes
font_01_sfnt_off0000f40d.bin
4e960cde3fcb8a78ca36a9ceeabe20cddca803bc683e915d3ab64727c270127d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF40D 11504 bytes

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