Malicious PDF — malware analysis report

Static analysis result for SHA-256 13ecf2bdcfdf4028…

MALICIOUS

PDF

81.6 KB Created: 2021-03-20 06:41:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 4886e9542258da5947c8f5d5a8faafa8 SHA-1: 97bda7a94d399607732331244a53b1e4c20bbecc SHA-256: 13ecf2bdcfdf4028d601f4d7c32821c17438efae8688aab9366ea3c79a94acc7
136 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of PDF_URI and SE_LOLBIN_RUN_COMMAND heuristics suggests the document is designed to exploit PDF vulnerabilities or lead to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://kuzutuzo.ru/wix?keyword=south+carolina+black+codes+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458417/normal_601ad1bd8b056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_601ef2ef9ebde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368740/normal_5fee2e7ecc4c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425492/normal_5fea351b5314e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390684/normal_602a4faae4e72.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/jiECvMp/97545011713.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448129/normal_5fedf397726e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495065/normal_6007204a18b0a.pdfIn macro / runtime command snippet
    • https://static.s123-cdn-static.com/uploads/4501041/normal_5feb6e596e0ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_602aace5de403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459628/normal_60225d4ee761b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417222/normal_60187134bb35b.pdfIn PDF document text
    • https://cdn.sqhk.co/fidegelotag/hFdhdgh/debabuvozenotem.pdfIn PDF document text
    • https://static.s123-cdn-static.coIn macro / runtime command snippet
    • 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
    • https://s3.amazonaws.com/folexapurilowe/junixivaxeguzurepi.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/pradeep_chemistry_class_12_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/difference_between_budgeting_and_planning.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/96755808450.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/windows_powershell_ise_freezes.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/video_lucu_anak_kecil.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/vaserolijugurixurejat.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_off0000f4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FE 5432 bytes
SHA-256: e0ab815ad05827c8015f0ccaefce8d429454a106475366d972a9ed8b8ddca826
font_01_sfnt_off00010763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10763 10404 bytes
SHA-256: 0f3866b09bd802e403cddddcc344652ed1a0339e6eca4dc2330c7bdd70e0ee1f
font_02_sfnt_off00012ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE9 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.