Malicious PDF — malware analysis report

Static analysis result for SHA-256 320750e4a9ceda17…

MALICIOUS

PDF

67.9 KB Created: 2021-02-03 19:42:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 0c8683845a51c798a0f382b736e424c5 SHA-1: 9599ce5886532ebddf75c55e5fbfcd07ac726e11 SHA-256: 320750e4a9ceda1703f49553e0c61c58e44bfa0fffd43f9d4cc6e287653654db
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as an external URI. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a compromised or malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=warren+central+high+school+ky PDF link annotation
    • http://titoto.xyz/2187082485by4b5.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/PjcCVNx/plantar_wart_images_after_removal.pdfIn PDF document text
    • http://hydra.moscow/64165390381hiv6t.pdfIn PDF document text
    • https://cdn.sqhk.co/tinodifozeza/VXWgiHY/will_smith_apache_jump_on_it_dance.pdfIn PDF document text
    • https://cdn.sqhk.co/zefafulolit/f2lidCg/palivuduzaxitazabag.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/8gcKhda/juzezotumazetuzatomawo.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/yhaijzU/miranapigajujanuzig.pdfIn PDF document text
    • https://cdn.sqhk.co/kojivitew/gkkGhgE/game_bowling_central_2_mod_apk.pdfIn PDF document text
    • http://trelon.fun/kewegaruzufagulupakukivicfy.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/hcgcUXo/nenepipesobasumagedekuw.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/cNxhcha/17182480962.pdfIn PDF document text
    • http://classkaod.ru/sunny_words_level_25_answersqhnzw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0AF 5028 bytes
SHA-256: 5eaa3459c08ea3b4c56c73c47a8d692ebb84bffd7f9ca24e2f05d5798cd63340
font_01_sfnt_off0000d1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C6 10272 bytes
SHA-256: e524284cd1d251e86febaffe345df302c7a156d5406eb451ddcf119c42adb1c6
font_02_sfnt_off0000f4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34