Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8d153724608f210…

MALICIOUS

PDF

70.3 KB Created: 2021-03-03 00:00:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2eebe4254083a1e5cf84fb7cfe3347b3 SHA-1: 895d79db63c62925d9d2098b45b5beb2e7737471 SHA-256: b8d153724608f2107686e8a3ed514d16cfea7141b4a533052363647e4d95faac
126 Risk Score

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
  • 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://botokaw.ru/award?keyword=teolog%25C3%25ADa+b%25C3%25ADblica+y+sistem%25C3%25A1tica+myer+pearlman+pdf+completo+gratis PDF link annotation
    • https://cdn.sqhk.co/kugefiruxat/gjbUieG/fovofiwubanego.pdfIn PDF document text
    • https://cdn.sqhk.co/leredupodeka/igfU2HV/30501056376.pdfIn PDF document text
    • https://cdn.sqhk.co/zezerixuwab/ihfiahb/toon_blast_champions_league_stage_12.pdfIn PDF document text
    • http://mizejodaf.mywebcommunity.org/all_in_1_hdd_docking_875_manual_espaol.pdfIn PDF document text
    • https://sazunanu.weebly.com/uploads/1/3/4/5/134596286/zonomuvimivasi_newiwebeta_palagavumapup.pdfIn PDF document text
    • http://wapividazofar.scienceontheweb.net/6300217431.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/faab2.pdfIn PDF document text
    • http://iciko.xyz/candy_crush_soda_free2lkgf.pdfIn PDF document text
    • https://kewegiru.weebly.com/uploads/1/3/1/4/131438086/2f44fa.pdfIn PDF document text
    • http://fosavaxenu.mypressonline.com/korean_alphabet_letters_with_english_translation.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/fizup/xomesuxobaxuwekimopir.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/wifunodewutab.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_off0000d044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD044 5956 bytes
SHA-256: 6b879c677d70c8359d2519377d307d99bbe8f38fbdaac8b54dd74c820bb39474
font_01_sfnt_off0000e3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EA 11396 bytes
SHA-256: 9aafe7f9fb49818c5903cb99ad26a178e240c1fc7f8f73aa7f60e34104e995df