Malicious PDF — malware analysis report

Static analysis result for SHA-256 762cefdf6b72527f…

MALICIOUS

PDF

67.1 KB Created: 2021-02-17 17:38:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 149af94c4874837825422be017ebb2e5 SHA-1: 0c7286502cb4b871fbda6a3b685f36ab7bb5dc85 SHA-256: 762cefdf6b72527f52ec7f4a15f772b539e43f8e1030025acf216e526c11b81a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/wix?keyword=merge+plane+hack+apk+ios PDF link annotation
    • https://cdn.sqhk.co/lupobikud/3jiAijh/girl_voice_changer_app_free_download.pdfIn PDF document text
    • http://jopimutedu.iblogger.org/zelafuzatorutalojow.pdfIn PDF document text
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/pamadagakamenis-posekud.pdfIn PDF document text
    • https://cdn.sqhk.co/duxajoje/TifjdUK/disney_princess_my_fairytale_adventure_pc_game.pdfIn PDF document text
    • https://xizuzumuk.weebly.com/uploads/1/3/2/6/132682261/f233a305294.pdfIn PDF document text
    • http://frut-tree.site/87299576622psg87.pdfIn PDF document text
    • https://rikulaseno.weebly.com/uploads/1/3/4/4/134471776/6060923.pdfIn PDF document text
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/jimalasaboliloki.pdfIn PDF document text
    • https://vixoketos.weebly.com/uploads/1/3/1/4/131453026/fawepuz.pdfIn PDF document text
    • https://tusopapa.weebly.com/uploads/1/3/2/7/132712380/lulamipapegusafa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wavemidafezan.rf.gd/multiplication_tables_1-_12_free_printable_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/wobovelomutikegalogala.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/basic_electronics_questions_answers.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_off0000cb15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB15 5264 bytes
SHA-256: 1ed754dd7487c3ff7b81ca7c0d06b72019d28986bf622acb7a58070a1cdd75c6
font_01_sfnt_off0000dd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD02 10260 bytes
SHA-256: bde52eab430b4f7a56295b5e024da5c7a7c62274efa80af2db577589435b8d56