Malicious PDF — malware analysis report

Static analysis result for SHA-256 600d12e91e3dbc8a…

MALICIOUS

PDF

81.3 KB Created: 2021-09-19 00:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 1b45ad5545f9dedf1ace3ceb48ae544b SHA-1: 4510e183b0cf9a1a30f159893ce2967de5531607 SHA-256: 600d12e91e3dbc8af6bcfe592d94c2cd3576c260950941c841d22aa144b0e63b
184 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' lure and callback phishing elements further supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 8

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/95c96aaf0dfa68abbceec92b014b0e2f/40585719319.pdf In PDF document text
    • http://progetec.org/userfiles/files/55597607540.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16135515943ee4---74543284843.pdfIn PDF document text
    • https://foodphotoshop.com/userfiles/files/zotawevajilafiboji.pdfIn PDF document text
    • http://vtvxm.vn/userfiles/file/kuwawubi.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/69557751135.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/85ee481d44b38fceb7a5e265d772071c/mevejosefodumuwam.pdfIn PDF document text
    • https://drisraadentalcenter.com/userfiles/file/38441682496.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/nitesugemejulogeke.pdfIn PDF document text
    • http://inica.org/files/file///93187870094.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161400361ce7b9---jemepajetilepasubiga.pdfIn PDF document text
    • http://ueros.fr/admin/ckfinder/userfiles/files/lunepobekosibor.pdfIn PDF document text
    • http://kartinatv.org/uploads/files/ximujuruwigawaxavuto.pdfIn PDF document text
    • https://thokhoavietnam.com/upload/files/winawosozegunufobubajo.pdfIn PDF document text
    • http://free-note.kr/files/fckeditor/file/12313428506137fb909eda1.pdfIn PDF document text
    • http://xmzhj.com/UserFiles/file/zosuliwu.pdfIn PDF document text
    • https://cytairtool.com/test/userfiles/file/20210915_45351.pdfIn PDF document text
    • http://www.gc-antey.ru/ckfinder/userfiles/files/88322116055.pdfIn PDF document text
    • https://illinoisfiscalpolicycouncil.org/app/webroot/userfiles/file/5534004961.pdfIn PDF document text
    • http://findmecakes.com/userfiles/files/49832438272.pdfIn PDF document text
    • https://jackinthegymtpe.com/uploads/files/202109132121498238.pdfIn PDF document text
    • https://cahayaapi1.com/contents/files/jigebalaluwezorupuxunabat.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/fosudubamogu.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/42546097279.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+use+shareit+from+iphone+to+androidPDF 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_off0000d8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DB 10896 bytes
SHA-256: 4c531b8e64c7b76bde1ad6065907c47a189b9b91074b23b6a01cbaae334ae8b5
font_01_sfnt_off0000f1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E6 17680 bytes
SHA-256: e805014235c420a7b8d61fe191db8760c13a115b5ca0f4bf906faaa742763756
font_02_sfnt_off00011f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F86 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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