Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13093dab64b871c…

MALICIOUS

PDF

79.0 KB Created: 2021-03-02 04:27:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 620119b4ba405db475eab878fdcb6e85 SHA-1: c54e011b32b34602e1968a66d7d3ca199c1a0840 SHA-256: f13093dab64b871cff7696c137842085168a4ddf71b91e83207007d04bb7e953
104 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is flagged by heuristics as a potential phishing or malicious download lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading a payload, likely related to the 'game hacker' keyword.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/wix?keyword=game+hacker+no+root+apk+here PDF link annotation
    • https://cdn.sqhk.co/zurefaxenov/6bicEyF/international_calls_from_ukraine_to_us.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366048/normal_60334c954d546.pdfIn PDF document text
    • http://dimax-matrasy.ru/67190607163svahq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_600de6cea5dd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410186/normal_6026f66a29149.pdfIn PDF document text
    • https://cdn.sqhk.co/wugolekufo/hcj4ijD/basketball_court_background_clipart.pdfIn PDF document text
    • http://azalea.store/jafur82i27.pdfIn PDF document text
    • http://hydra.moscow/53171589116qaa6m.pdfIn PDF document text
    • http://tiktoktop.design/filo_pastry_sheets_aldig2it6.pdfIn PDF document text
    • https://cdn.sqhk.co/selodiro/agciahb/28936418746.pdfIn PDF document text
    • https://cdn.sqhk.co/kixikeli/rhbibjb/568945372.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/1icigha/wemozivedirox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fdbfb6f1b13c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384817/normal_600ea2b13adb4.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/vuraradaso/cardi_b_video_press.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/wajumefa.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/free_bootstrap_responsive_one_page_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/gorirakoma.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0C 3912 bytes
SHA-256: 9bcba25f698eabeddb3a8cfc6b9386445ee18981db792c3a7395a22953956c87
font_01_sfnt_off0000f9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EA 5056 bytes
SHA-256: ef64ac7dbbaf2274dbff918a0bed3fdeb0919f61aff9495d72dfd2e77c18cf61
font_02_sfnt_off00010af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF7 10468 bytes
SHA-256: 5de6f7a36ea2187561149e68efde9062c575ee31610a1ab869a3b12eb8eb24ce

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