Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c8aa7814606b9d…

MALICIOUS

PDF

70.7 KB Created: 2020-12-28 10:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 97ee00b9855199ab36711873dded70a9 SHA-1: 889f8d14a94f1c92f0dfd83bd329f98735d68049 SHA-256: 76c8aa7814606b9ddcfa9175def1039f1ea867d1bd59895bddf4272f13f4feb0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading a game mod, likely a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect the user to a malicious site.

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://trafffe.ru/strik?utm_term=wild+animals+kingdom+battle+mod+apk PDF link annotation
    • https://romudakon.weebly.com/uploads/1/3/5/3/135318284/28f8925e5d5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389793/normal_5fcaca7d90486.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366995/normal_5fe11dac28446.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447107/normal_5fe4f06c5fc27.pdfIn PDF document text
    • https://wivaxuzavegisi.weebly.com/uploads/1/3/4/7/134769578/fanume-jesedane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_5fbd45a6b14d0.pdfIn PDF document text
    • https://rizigavitud.weebly.com/uploads/1/3/4/5/134581125/depegoximasidusifup.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/38a5f9eb-081c-4a92-b177-1963fc7e5b8f/lesson_7.2_skills_practice_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a091fc48-0dc6-483b-8cfe-b777ece99f4a/46254407884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e118fdb-ecc2-4048-93d7-6e24633065e5/mubizojufusufepol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a248853-cd19-4cf5-be4f-54f0e51dafbc/magic_tiles_3_online_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cff976d-757d-46f7-9272-1da864b1882c/88277570926.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_off0000d4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FA 5400 bytes
SHA-256: 8691473b0f5a4af722c6c6bc8bef7967f7b3563909fb6a624be8129cfecd941c
font_01_sfnt_off0000e757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE757 11772 bytes
SHA-256: 4f1bff64c8cf3a27d573ff94473bdfb831a87a701e96aa44776a966cd93ecd54