Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac0606dc2b4bd4f…

MALICIOUS

PDF

73.0 KB Created: 2021-03-02 13:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a4c39aa5d6855a7ba539fbd2c0fc4f35 SHA-1: 86bd4790ac5dd830bff09028ef2e8f5463053e75 SHA-256: 8ac0606dc2b4bd4f8a8ba32c902c4827247ae5307ab4f663c47e50ea6921d809
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/wix?keyword=capitulo+5b+answers+realidades+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475738/normal_5fe32acee9cad.pdfIn PDF document text
    • https://rurawovupotoli.weebly.com/uploads/1/3/4/0/134017211/7000482997.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/Thdibhf/today_s_top_hit_ringtones.pdfIn PDF document text
    • https://cdn.sqhk.co/woberimi/ez2ge0R/polaroid_originals_color_frame_color_600_instant_film.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/gutexewu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370547/normal_60272724480aa.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/gadipudasenekudeti.pdfIn PDF document text
    • http://dusejetiwogodad.getenjoyment.net/mulase.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420608/normal_600b37033bd67.pdfIn PDF document text
    • http://slamelina.website/duwuxi0wgb7.pdfIn PDF document text
    • https://cdn.sqhk.co/lizubenesowi/i0hjnjh/hearts_of_iron_4_dlc_guide.pdfIn PDF document text
    • http://manovina.mypressonline.com/4907850401.pdfIn PDF document text
    • https://luvumape.weebly.com/uploads/1/3/4/4/134438520/2fc206cf51.pdfIn PDF document text
    • http://ygrash.website/sonunufezokefazowatozuwhin.pdfIn PDF document text
    • https://sapukivuzenofa.weebly.com/uploads/1/3/5/3/135341545/8c7b6b81e3da.pdfIn PDF document text
    • https://cdn.sqhk.co/guxuboru/hcigTgh/5733496196.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F3 5344 bytes
SHA-256: a4a3e266d8cf3f9a7454b7e443ebac7418540e3b699cf7f6f6ad6c135dff0ed0
font_01_sfnt_off0000f337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF337 10480 bytes
SHA-256: d9cf146bac80c55c98b6374e644fcab40cfa4c28c831a0acb7c33d82317842cd