Malicious PDF — malware analysis report

Static analysis result for SHA-256 131b2cf36e2b769c…

MALICIOUS

PDF

70.7 KB Created: 2021-03-09 09:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 60568d029628bb51c89df44701fc452d SHA-1: 9418e878b6d32b883414c961331ee1ab626c32f2 SHA-256: 131b2cf36e2b769cf27b93ab84d5495449eaef47cf8f9c40a20071c28572ad5c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/award?keyword=swing+check+valve+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453906/normal_601a9aa8c2599.pdfIn PDF document text
    • http://reduslim-shop.site/btec_sport_revision_worksheetsogt8z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487201/normal_5ffd0d7fa913b.pdfIn PDF document text
    • http://meetcabinets.xyz/time_to_answer_complaint_new_jerseyphp2x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476274/normal_603caaa8c1820.pdfIn PDF document text
    • https://fadufavibog.weebly.com/uploads/1/3/4/8/134889314/kutuvunuvug-tuwumuporarixub.pdfIn PDF document text
    • http://reduslim-italy.site/microelectronics_circuit_design_4th_edition_solution_manualp3uot.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/kenmore_700_series_washer_spin_problems.pdfIn PDF document text
    • http://hihikane.space/pitozogezukopisunitoduwag5fzom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_6040fe33cd80c.pdfIn PDF document text
    • http://creditactive.info/748568049419jqvc.pdfIn PDF document text
    • http://topshops.website/rekogitezukawejopale6wrcr.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/30141267893.pdfIn PDF document text
    • http://zeruxejobimal.mywebcommunity.org/sistem_politik_di_malaysia.pdfIn PDF document text
    • https://pokifinib.weebly.com/uploads/1/3/4/0/134017941/21c9e.pdfIn PDF document text
    • http://top-agent.ru/xinupiripovipemewuzuz3yp9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6ddb26ad-aa8e-4a3e-a925-5cef6fc035e1.filesusr.com/ugd/d3d820_0502683c3115471f9f08de9f479e864f.pdf?index=trueIn PDF document text
    • https://43a98339-0465-49d0-a416-8cef4780896f.filesusr.com/ugd/89258f_664373746e794c3ea081b0c63fed855c.pdf?index=trueIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_87fba5136627437ab801e113a9b2952f.pdf?index=trueIn PDF document text
    • http://kuwijiti.myartsonline.com/bopafuwokatozi.pdfIn PDF document text
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_048d35aa95af48c0997e3b9ca2335962.pdf?index=trueIn 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_off0000d82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82D 5460 bytes
SHA-256: 77d133dd0694ea45e459cbfa861e4305037a3f61a3410f1fecdd79ebd4ab5c98
font_01_sfnt_off0000eae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE6 10156 bytes
SHA-256: f0eabc7f534279be8014b7dd2d83d0e1961fb929a5274db22c517e506fb78080

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