Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa30c3ed66cfa7ed…

MALICIOUS

PDF

45.2 KB Created: 2020-10-30 22:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 80cb5b3ac99015042d42244eecb57a4e SHA-1: e7d68179a92252b585bee0caa4b8e40e6827d031 SHA-256: aa30c3ed66cfa7ed69cf825509c05664fa31f459c99a2fc3ac97456d938fb0d0
154 Risk Score

Malware Insights

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

The PDF contains a lure related to "Rules of Survival hacked apk" and embeds numerous links, including a critical redirector link to cctraff.ru. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for malware distribution or phishing. No scripts were extracted, but the PDF structure and embedded links strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/strik?keyword=rules+of+survival+hacked+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f8878ea79d16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427499/normal_5f9c6d68db869.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/jolokozosato_xupaf_mogivofo_tesodufinugefud.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/6503527.pdfIn PDF document text
    • https://vuzejugusu.weebly.com/uploads/1/3/4/4/134486163/pozubazodajad_lobaw_sizakovirusadaf_pugij.pdfIn PDF document text
    • https://pitamiled.weebly.com/uploads/1/3/4/0/134098016/jisuk_gojefu_xunovomeduzujok_junuzemopo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388629/normal_5f99a14f21d98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403954/normal_5f91579bb8639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424647/normal_5f99326cc5b5a.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/tipakalif/eric_cohen_student_health_center_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02ac10c3-a225-4479-a137-37da9849e2c8/23094216870.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/pimunirisasubobeluxab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d79f650-c409-4bdb-b22b-352a494924ca/fakamavokeruruj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5107c24b-aedb-48c0-b631-3ac6a6a46cc3/kusonixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38862ad-c75a-44c2-a432-2c1f7b649c61/zejugepalirelabamenole.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_off00006ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 5372 bytes
SHA-256: f50085837ea34846dcc0ae3fa8ec8e40c0cae44fdc26777eff5e2a58aee503e9
font_01_sfnt_off00008249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8249 11000 bytes
SHA-256: 23b4956b04cdc1633dea502dd8ad3e500cae40f33670228cc0592f057ae4d285

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