Malicious PDF — malware analysis report

Static analysis result for SHA-256 53da6ac1409da95e…

MALICIOUS

PDF

68.2 KB Created: 2021-03-03 02:43:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dafbde68ae6c45ee8d3f092848b9291c SHA-1: c35913348cadbc80db4ff439fb929c5af9a18a6d SHA-256: 53da6ac1409da95e884b1f7d2f1c7de2544eb83474271c50a92125929c6880d2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=classroom+instruction+that+works PDF link annotation
    • http://busurman.space/movotutebasis1usgb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387230/normal_601d5d98bfbfa.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/41482369324.pdfIn PDF document text
    • https://vusutiti.weebly.com/uploads/1/3/4/7/134762674/4155156.pdfIn PDF document text
    • https://gopopozemilin.weebly.com/uploads/1/3/0/8/130874381/dowivakuzupaw-sujodenaluba-zobenovidisivut-butesigiruzapag.pdfIn PDF document text
    • http://instas.site/beast_quest_game_free_online_playk3rb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367312/normal_601ae12a09eb2.pdfIn PDF document text
    • http://kernig.online/494938090325yimv.pdfIn PDF document text
    • http://raisinshq.club/664385499053gmby.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480753/normal_6006e39bd0289.pdfIn PDF document text
    • http://trudogoliya.online/skulls_of_the_shogun_nintendo_switchgq7ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372682/normal_600cc4d52c8df.pdfIn PDF document text
    • https://begakidiwadagav.weebly.com/uploads/1/3/1/3/131397934/8683107758c.pdfIn PDF document text
    • https://jinikegubu.weebly.com/uploads/1/3/4/8/134873825/6e92ecd.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/tracfone_samsung_galaxy_a20.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/83ba296d.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/mexavofezoxi/rotofotudaz.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/chaplin_1992_full_movie.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_off0000cfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA8 5100 bytes
SHA-256: 96d7067fa8bbfae0a9b6710d9b1a64176e7d0b131dc29778349bb69663965a33
font_01_sfnt_off0000e0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E6 10184 bytes
SHA-256: e6aaf3cb58e0e5f584bddb1328f46e479e8f04229692b6428490645e189cda26