Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64a0ffba0769952…

MALICIOUS

PDF

72.7 KB Created: 2021-02-10 13:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 39a27e96f30f73609fd1a8356ac89556 SHA-1: 4ac71435f64094e21d42d47134b6859b61daf296 SHA-256: b64a0ffba0769952e5634438de47fb41b7f4661ef28a2aad0920037b86b6504d
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://baarspo.ru/wb?keyword=street%20fighter%20resurrection%20full%20movie PDF link annotation
    • https://cdn.sqhk.co/wadalibituge/UEtjbhh/joy_con_android_apk_download.pdfIn PDF document text
    • https://xubibedizu.weebly.com/uploads/1/3/1/4/131454459/8352146.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/VHqrlif/zikopikel.pdfIn PDF document text
    • http://clobuss.ru/post_stroke_seizure_treatment_guidelines81zzt.pdfIn PDF document text
    • https://danevetiwa.weebly.com/uploads/1/3/4/6/134600357/7047047.pdfIn PDF document text
    • http://robertferrell.net/trinsey_vs._pagliaroxxx32.pdfIn PDF document text
    • http://soldonlittleton.com/wonafelunaletarivtrwd.pdfIn PDF document text
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/pezixajese.pdfIn PDF document text
    • https://cdn.sqhk.co/gasajolop/hcfgdQI/download_microsoft_launcher_beta.pdfIn PDF document text
    • https://wowavimisaken.weebly.com/uploads/1/3/0/8/130814021/nugawu.pdfIn PDF document text
    • http://tushkanok.xyz/bajiwaketevajanowavepimo1z4sp.pdfIn PDF document text
    • http://basvuruizleme.online/81717087080os0l3.pdfIn PDF document text
    • http://gratoramaa.space/possessive_adjectives_spanish_worksheet_answer_keyxo1wz.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/wavunot/91730522682.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/lojavaruvizewokivan.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_off0000e063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE063 5248 bytes
SHA-256: 1a4d2e97e426a71fa2bef67828c7247f911d3a81084bf6c00356e5173b5b02c5
font_01_sfnt_off0000f226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF226 10428 bytes
SHA-256: 20eea4b481154c1070123b3322fa58cccc8c9ede1a39e44d1745222297f537f4