Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92409c9ffe5db2a…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 14:34:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8116c6db740f8b47c4df93b56b83ef01 SHA-1: ab8c8c83b121d07df5a15349d8c4e27be8768f3d SHA-256: d92409c9ffe5db2a9699d33dc4e97643a3ebc263faddb4559d1380181c3dbfa8
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://nipisod.ru/award?keyword=magic+bullet+instructions+video PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408991/normal_60033f5bb070d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420235/normal_601cea71ecc71.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/how_long_to_see_results_from_5_2_diet.pdfIn PDF document text
    • https://cdn.sqhk.co/mebereserab/gjvN0mQ/79919191259.pdfIn PDF document text
    • https://cdn.sqhk.co/wedowetaso/P3Gji1q/jimodapajonaxonovifapo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456728/normal_60212ba41965a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410016/normal_602b98d0b21ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_601bd3da6f7d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_602226dc4c1f3.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/nibigoxibuzaseta.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/introduction_to_calculus_and_analysis_vol_2_solution.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ratudafoxivux.rf.gd/amendment_to_operating_agreement.pdfIn PDF document text
    • http://luvojidepezepag.epizy.com/nuvadore.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_off0000dcb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB1 5312 bytes
SHA-256: 2b09fa77daa241bfe8b3de303e608bf6d72d0fa2de47990d5fecf31ae4f607cf
font_01_sfnt_off0000eedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDF 10212 bytes
SHA-256: a37df0d986f6e8be27684235e8389440e0b9b23050fa010f30e36fa1021a1921