Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0cde9a257310ba…

MALICIOUS

PDF

66.6 KB Created: 2021-06-05 14:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 73a484deae390934c64f41a4d1d085b7 SHA-1: 055a440e43f37fe508e93198fa7555554389858f SHA-256: aa0cde9a257310ba3092de73efc4e02d9e24f0f1090165d2e2ed28abfbc20146
154 Risk Score

Malware Insights

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

This PDF document contains multiple links to external websites, many hosted on compromised WordPress installations. The document body, though heavily obfuscated, suggests a lure related to 'Coca cola swot analysis ppt'. The presence of numerous links and the ML classifier's high confidence score indicate a phishing or malware distribution attempt. No scripts were extracted, but the heuristic firings strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9771

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://inwebjor.ru/uplcv?utm_term=coca+cola+swot+analysis+ppt PDF link annotation
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/ff7c8d115ac53bb37ba66c7f5bc7d8cb/papuretinet.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/as3k7ofkh2mjt59ihb9iptv80o/fugopi.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/885eb990ea938451b2db3c114506ef84/vubuxigukesoxipil.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e119992340---buxeligapaxewixonirumikef.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/66907150788.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16091643bd2e74---sorojelatur.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/f44737065ab8975122b0d166589324e8/somupujilekozedakob.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/373b6aa534f2a709f919d73c7a605999/94701568464.pdfIn PDF document text
    • http://group-anons.ru/userfiles/files/dinijifimemawos.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/125543184060a48e06a8782.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/noic9uae3juk8giotjn82b91j3/fugaluduxowamibemi.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/74bc431844fc59d15659414c7ea955a2/bapusipexutotafaluxadijod.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/95491394788.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c0b99a693---kagiwonudagetuwo.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/f556d3269a7ade2be99e8790abe5d6b2/pomasigesogafoga.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911f5260e45---muvividemuzobu.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/04b1da402b08735273b11b4271d41573/29336761821.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B7 4932 bytes
SHA-256: 629bf970cc7619feb2b0ce2bb14c8c93d5c47978924da58ae963f0095427f67f

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