Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a2f652bd166828…

MALICIOUS

PDF

63.6 KB Created: 2021-05-19 22:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a95450197c1ddba8e5f09e7e2968acb2 SHA-1: 5ff514aabcd0474a8359d6f7eca6858f57e0f91e SHA-256: 02a2f652bd1668287eca0b2ce7160c43787dd8ce9600d2a7d3024f97fdd348bb
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to host malicious content or redirect users to phishing sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8701

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 http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070388b16450---tobakur.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb3376be84---faduxutatujudadefuxi.pdf
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/7g126nqjli1gfk66klcvmabg1r/revumetesaraxitipafijax.pdf
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/a427692b163a5694f25a2c59ebad6156/zelujivizibu.pdf
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/fa70c2ded709e9036a085ecb450f0a38/wugefavagir.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a53615945ce---gibabokevenedogoku.pdf
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/39f16f16be1b62f7f3664ba760346902/9717867414.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d55a0d3b05---ledibaxis.pdf
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071fe5678aba---42942288455.pdf
    • http://anandamsanyal.com/userfiles/file/tipodiwajerixudinedopiga.pdf
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f32dd329b8---medazabanuzalemolobeb.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/4bcqhfe0t2vjg8utjn8h7l1dqp/70872233912.pdf
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/a8d9959d067e8e0a5891245ae9785259/papuredotelitujofadapid.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f05fb0d58c---wosonuvozofufidex.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075cae7d374c---27763321369.pdf
    • https://clickkedai.com/userfiles/file/4893717490.pdf
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d26674302---nazarududipolaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=strategic+group+map+under+armour
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eae3.bin
66f4d9c5618e2e4d5d6c89f62564028ff6174d6bce28d25d17cd1aeb4a15139b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE3 5284 bytes

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