Malicious PDF — malware analysis report

Static analysis result for SHA-256 932936259afd1b69…

MALICIOUS

PDF

67.8 KB Created: 2020-12-19 12:44:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cfce79f64b9ba0f6a831eb3656ea813a SHA-1: 354333d9fdf690afc292b571f544ef4b24d98770 SHA-256: 932936259afd1b69afdcde01e72d15b0d42d62bb4a415e57115f231d53126e1b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of the external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/strik?utm_term=logo+del+sena+png PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485813/normal_5faec6d2eca3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447086/normal_5fc081e8dd0f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378621/normal_5f9b9b73a7554.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/theme_powerpoint_free_2013.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6f6fe02915d4a16f5a487/t/5fd6d9f95488895576bdb63c/1607916026160/tewujugu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2979f7848ba205d236332/t/5fc5c4449b1ed03538a547ce/1606796360017/ap_studio_art_college_board.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcb8173599a867de449200/t/5fdcdd07bcde226dbc02d77d/1608310024244/c._v_format_in_word_file.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/wogesaworerabadapiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d22f8f-05b4-4581-b695-166b529fb4d1/93947901950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe72b5f9-413c-464f-9d78-02af987f60e6/best_buy_32_inch_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/246afee1-65b0-424f-9a0a-430b95d99ae8/76013599171.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/user_interface_specification_document_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/62127326360.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA3 4972 bytes
SHA-256: 022d3b802bb39f2c93711a3c56177c2c06f286caadc361ed2e936c2881e68603
font_01_sfnt_off0000dca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA7 11432 bytes
SHA-256: ab9d42fc902cf289b3c770e292910fe459dfa4baad2167264e9e9f50517b4b9a