Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b09bececcd9f36a…

MALICIOUS

PDF

68.1 KB Created: 2021-02-13 23:24:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 613365b745908aa121bf277919d0393f SHA-1: 4c9b1263854be486d6f2bca9fe5eab1757aae533 SHA-256: 5b09bececcd9f36adad369a5f060520e9b5cec91a35663008871da4da3bc5c3f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/wix?keyword=olive+production+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4415304/normal_600b71b1191ca.pdfIn PDF document text
    • http://hotita.fun/20062215483egda7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383582/normal_600aa7aabdbce.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/eBLhgDJ/34372165045.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384037/normal_5ff9ae110ff60.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwebobit/ige9Uie/pitbull_wallpaper_full_hd_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_602477463b5ef.pdfIn PDF document text
    • http://salonvarna.com/90149309960z2xd4.pdfIn PDF document text
    • http://forpost-electrica.ru/20898680859ev3h7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465151/normal_600c7ee46af06.pdfIn PDF document text
    • https://cdn.sqhk.co/gilevetu/e74hcgf/homemade_facial_mask_for_acne_and_blackheads.pdfIn PDF document text
    • http://vojidovalo.iblogger.org/cast_acrylic_sheet_meaning.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/nufidibodudulad/3751004287.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_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 5128 bytes
SHA-256: b0b5ea98331b815cabf4fe013c0dfc23c59da0fc9aed8c33222e5a0c21a1d856
font_01_sfnt_off0000e19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19A 10044 bytes
SHA-256: 3cc6ca266911076c9b5ecf9008ab77d7a053f89109cfe4627fbc7cb3ade85099