Malicious PDF — malware analysis report

Static analysis result for SHA-256 8892978cbebdafa2…

MALICIOUS

PDF

70.4 KB Created: 2021-01-30 21:17:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5b252606c461aab1b22a0c24ce25c2c2 SHA-1: 12202aa65ee313e3126e082a88cc25da0d2939c1 SHA-256: 8892978cbebdafa291ec28cd304bd2d1bca648786404ec515f0d93f0df88f95d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wb?keyword=corporate%20strategy%20definition%20investopedia PDF link annotation
    • http://fb-pageunderreview.com/xexurupubuno5j8pf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fec2fbea0216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495997/normal_600bb154994e7.pdfIn PDF document text
    • http://obmenkalnr.online/41706928424sfgd2.pdfIn PDF document text
    • http://cybety.xyz/ruvolujtlvgh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444850/normal_5ff4eb1350d72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385413/normal_5fd6331e17f2f.pdfIn PDF document text
    • http://reduslimitaly-official.website/stickman_football_soccer_3d_mod_apkk2hgf.pdfIn PDF document text
    • http://leqqurint.online/my_little_pony_unicorn_coloring_pages413cm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465263/normal_5fcd107c66f58.pdfIn PDF document text
    • https://wusitezuredov.weebly.com/uploads/1/3/5/3/135314125/katomag.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/mipizaju/vebebutoxeti.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/frozen_jr_let_it_go_sheet_music.pdfIn PDF document text
    • http://logururud.epizy.com/identifying_parts_of_speech_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/21508705935.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_off0000d935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD935 5244 bytes
SHA-256: adae0e8b6b97c69ead67b38c061200249eb06cbad4af7610ea82a63bba507248
font_01_sfnt_off0000eb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB25 9868 bytes
SHA-256: 682a6fe608d8caa69f7f07b02af16888b27e7e1d6ca5c6ab71cf21b7d0c04665