Malicious PDF — malware analysis report

Static analysis result for SHA-256 a84d93953dd504ed…

MALICIOUS

PDF

68.9 KB Created: 2021-03-10 07:31:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: da71c85668f015b4ae0100187e1feee6 SHA-1: 2b0893a4e4f91a6d4b3462a1d50937ab2adb889a SHA-256: a84d93953dd504ed6b6a534a676dd01e195ee5fd379bb5bf9a934cc03be34996
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/award?keyword=causative+advanced+exercises+pdf PDF link annotation
    • http://silkhfig.bid/dokomemokekikanetiaibaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387918/normal_5ffde9b7bacc5.pdfIn PDF document text
    • https://kekorozonositen.weebly.com/uploads/1/3/2/7/132710750/4051552.pdfIn PDF document text
    • http://pedrons.space/360_antivirus_for_android_apkf6bw1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460981/normal_5fd771289101a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391925/normal_5ff5d2317ca50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427093/normal_5ffe505802f31.pdfIn PDF document text
    • http://alcozerox.com/zikimoneruvobolekuwolasan1ogap.pdfIn PDF document text
    • https://ramujodavuratot.weebly.com/uploads/1/3/4/6/134667495/2455557.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://72dfff08-f6cb-4f5d-aaac-ebe71175d6a6.filesusr.com/ugd/c268f7_db5b0ef8343d42788928d5cfbb354c1a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4088309a-64f4-44fd-b472-1e0b3e3ecff7/what_is_the_best_app_for_drawing_on_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/bojangles_cinnamon_biscuit_calories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60003cde-6af3-4e80-a006-4e76248bcdad/22448128406.pdfIn PDF document text
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_8aa18129a835410caeacd0efaf61f037.pdf?index=trueIn PDF document text
    • https://edefa294-c65c-46c5-840b-8a4669b9fdfe.filesusr.com/ugd/e4a001_bf5305de523b4a1ab08a70368319fae7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9a32a2b-875a-4acd-94f9-ba943a1fefb9/nudabezipezofejuzixu.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/vojoguxivi.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/vigipizodapavade.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_off0000d0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D0 5152 bytes
SHA-256: 3fe79bd2d5cab5c81fb44a5de74d97933266942186519cda30f00cea0b321d3c
font_01_sfnt_off0000e26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26E 10368 bytes
SHA-256: 8c52406c7ba98c0f602952801fe2fbd103a177229d7864fd3aa6aed0efb37dde

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