Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7f4925f8ba23c80…

MALICIOUS

PDF

76.5 KB Created: 2021-05-03 16:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3b8eccd99105376f7bb9f696dc5100b SHA-1: b21e72b403fc73a17ee62d46a947541ed6c2ef96 SHA-256: a7f4925f8ba23c80e9b9a5280356735afe1591e587475df228d040b3e6f9869b
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of embedded URLs and the nature of the heuristics suggest an attempt to redirect users to download additional malicious files, potentially exploiting vulnerabilities or delivering malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b8b1ea9146333e57f8eed2e044fc6c6d/22086679607.pdf
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/40ac2a9134f1fa8bbe3684ba0aaab855/wupejawok.pdf
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf83e30d41---79795072861.pdf
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c9ae0bf05b---9420602945.pdf
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/40ec960fd6eee2b9eda629e9288a3551/releruwosekatutares.pdf
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/41c45d865e095ffea0cfa75f602edbcd/xubeguve.pdf
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9c65cc562---kuzudadawudegan.pdf
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/66t246udji081btvac1hbqd0n5/22246313851.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/p9bbtpohhbp221vvjvq1q7rma3/45717260770.pdf
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/d961dd22b86f27dfde87019117a5d468/22797729940.pdf
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/9743e279866bd5da4889cb1337715d8f/vomoterefo.pdf
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/763hcods0gnjn65601vikduruq/7892514828.pdf
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/2c3524d9dc41d89368b40270dc982b49/tekobeladutixufesodefozaw.pdf
    • http://alexanderkanevskyartgallery.com/clientMedia/file/kizalolawufefedo.pdf
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/42cdee103295c660c3a33cc6d1ea820a/wunavipamukolamixum.pdf
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608071018028f---lemupufoxogowek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=aliexpress+myanmar+apk
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://scripts.sil.org

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d566.bin
7faa9eeab95af6daf50d059d731b0b44b0536fb335870c671d64dd8b9e5f455b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD566 5188 bytes
font_01_sfnt_off0000e6fe.bin
6ff33eed419080db7e70debf7ff13318a96e99ed16e0acb46dd490792c6e9acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FE 11260 bytes
font_02_sfnt_off00010cd8.bin
91a8c2db7cd9cf7aaf6301175d99d81957f917a0fe11f24ea6179fa741ada9b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CD8 7920 bytes

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