Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a6f30a2ee496c5…

MALICIOUS

PDF

77.0 KB Created: 2021-09-03 04:26:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4c14ebff2a54f11765f7a6da233e9779 SHA-1: 1e03630e60a0646c26ae84b119437586be3a87e2 SHA-256: 69a6f30a2ee496c5452d195d47eb24dc47899462265f77c5b7ec1c6221a96347
176 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a callback phishing or tech support scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to obscure the true destination or leverage compromised infrastructure. The ML classifier and ClamAV detection further support its malicious nature, flagging it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://vorne-sitzen.eu/pcms/content/file/90877058217.pdf In PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/sa6rasqgrsil2064f92acpn3jk/jogejesepikowutasanave.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac2adf9edc9---nofujafaminevoxe.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/33994924979.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/df555c9af2d7771c52b4b5650e284f57/25002258408.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a20eb7302df---20697907069.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/foxibobudevuribujeveses.pdfIn PDF document text
    • http://musthighschool.mn/ckfinder/userfiles/files/kowulexuweramor.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160863e50a1205---36852131795.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083db997c381---josuwanexowu.pdfIn PDF document text
    • https://anctools.com/ckfinder/userfiles/files/raferajibononibu.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160801a6845b00---womijimojoguvib.pdfIn PDF document text
    • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/96437279087.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/53771077446.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/31837786345.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/f5e9ccc148c50ebf84afe2dbdf7e4ddb/rawivif.pdfIn PDF document text
    • http://xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/28640374628.pdfIn PDF document text
    • https://kingcarmotorista.net/uploads/files/wanuwim.pdfIn PDF document text
    • http://tahi.hu/ckfinder/userfiles/files/veniwolodobixiwix.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/93sd27f3j4vtjrrv7qs3k42i42/dawumulezokamidag.pdfIn PDF document text
    • http://finara-v.com/file_media/file_image/file/xamaf.pdfIn PDF document text
    • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/nejafotajosufanow.pdfIn PDF document text
    • http://soflcops.com/clients/83267/File/juxoralek.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/2f3db21d4b5880d0a65ae40fb3882044/38121625383.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/bewepujixakovogogo.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/f839c1464835fed156bd1ece9ecf8c41/43030385928.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=mophie+powerstation+xl+manualPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC772 17736 bytes
SHA-256: b23ed437606ab1071c94ea468c3dacda70712d0b4d220885ae6a0cabff3d6fb5
font_01_sfnt_off0000f581.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF581 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D98 10800 bytes
SHA-256: 98153aba9235e4e9014ea6a49b5c6b44a72c65700878b1118b3576cf6f7f5505