Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ddafa0d0f99e6b…

MALICIOUS

PDF

79.0 KB Created: 2021-02-05 15:56:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b3d7cd512c988bf1e5d3d81f1ae0bc9 SHA-1: 110cf38b777d3aa332b3cc80e1e38542b10b400e SHA-256: 87ddafa0d0f99e6bcf582f8fb0822d02e08448389d1491caad12d8b58aa4991f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/wb?keyword=choices%20game%20mod PDF link annotation
    • https://nijeliwawinezim.weebly.com/uploads/1/3/4/4/134497061/pabesojuwodifulapa.pdfIn PDF document text
    • https://nerukime.weebly.com/uploads/1/3/1/3/131379394/f57483c55.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/gd6LWhj/pop_catholic_church_flowery_branch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487632/normal_600bc49a8e8a8.pdfIn PDF document text
    • https://fimudelowuj.weebly.com/uploads/1/3/1/4/131455024/59a091.pdfIn PDF document text
    • https://cdn.sqhk.co/salasereki/Vhjehap/street_food_cooking_chef_pizza_burger_restaurant_pennsylvania.pdfIn PDF document text
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/munugojak.pdfIn PDF document text
    • https://baliwiwun.weebly.com/uploads/1/3/1/3/131380001/litarovewepi-xekofipave.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/dGPIghj/80380998312.pdfIn PDF document text
    • https://cdn.sqhk.co/zobelekivix/Ggijbig/lijofunodowili.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/giejejf/sijagak.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/jivamubug/apk_codashop_free_fire.pdfIn PDF document text
    • http://donenufalu.rf.gd/gevunudoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/rivegiweb.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/railway_reservation_app_free.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_off0000facf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACF 5132 bytes
SHA-256: 494c94b7bd7cd761558d078a43921ecccb5bcc82c9992fbead99ac5bbc90b905
font_01_sfnt_off00010c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C19 10380 bytes
SHA-256: 78c9db4eb5a3658eb88c590032d1644501efc40b7fa30d8573a4336370a2ecaa

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