Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d0c493e0e16c76…

MALICIOUS

PDF

76.7 KB Created: 2020-12-26 00:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2853bf5b450c4a6c5804e374714f4f95 SHA-1: d60f3fc563209b1a0e90edb957162098f4a19d11 SHA-256: 12d0c493e0e16c76486c73e600682ddd005dd772f96186a366d9137762a23d10
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL that is associated with malicious activity, specifically a lure for 'geometry dash mod apk'. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious redirector URL within the document body suggests an attempt to lead the user to a malicious download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=geometry+dash+mod+apk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408475/normal_5fe2d9feea637.pdfIn PDF document text
    • https://cdn.sqhk.co/mavozopofug/jiIiiew/zozurukeniwifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493579/normal_5fb7737451686.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374189/normal_5fcaea7423352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5f8fc79427511.pdfIn PDF document text
    • https://waleberof.weebly.com/uploads/1/3/4/3/134385841/kudutifukewusot_gobasuvagivigad_babuji.pdfIn PDF document text
    • https://cdn.sqhk.co/godajaxox/GDAyhi9/giwamile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414173/normal_5fc5f4f0db6b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb7fc86-cc7e-4b35-bac4-365fbf46f406/dabatovusavaviso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3034cbf5-885f-4c31-b724-2a3fe8e50ab2/zufuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3982a220-8b27-49ab-b8f1-a833025f32ed/86126643378.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_off0000eec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC0 5364 bytes
SHA-256: fc3e15323c65524ad4a1ccfa2449613832e1f8170c9a2538c0d3d3b87312ce07
font_01_sfnt_off000100db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DB 10992 bytes
SHA-256: 044b249f776eb6ad471ebb930f62c36c6b9372b73c72eb3acd896d815fa503f8