Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c8e95a5da81e8d…

MALICIOUS

PDF

80.5 KB Created: 2021-05-20 06:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 263ede83de86ec87c14ae939a07dc4ee SHA-1: a930a76675cfbb98b25bc2ced5d7b218db69a7b4 SHA-256: 70c8e95a5da81e8dbd7465bcfc00278843535a3c6eec1f3d7595865b4a40d8dc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/strik?utm_term=how+to+use+the+power+of+the+subconscious+mind
    • https://cdn-cms.f-static.net/uploads/4470825/normal_60182ffe1a286.pdf
    • https://cdn-cms.f-static.net/uploads/4403140/normal_5fd18aa1134c9.pdf
    • https://cdn-cms.f-static.net/uploads/4490736/normal_6017661b1690d.pdf
    • https://cdn-cms.f-static.net/uploads/4473651/normal_6035d3b7867f6.pdf
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5fda58bcb11e6.pdf
    • https://static.s123-cdn-static.com/uploads/4414688/normal_5ff801e95a705.pdf
    • https://cdn-cms.f-static.net/uploads/4483388/normal_603df64647c5a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pojikovewijeja/google_maps_api_html.pdf
    • https://s3.amazonaws.com/wazorixekunafob/does_the_moto_e5_go_have_wifi_calling.pdf
    • https://uploads.strikinglycdn.com/files/f9bc2dbc-ffd1-4ef7-bde0-f99d50497d6c/duwedijirarusekuwovod.pdf
    • https://s3.amazonaws.com/mokamoba/balimekivojijefoterok.pdf
    • https://uploads.strikinglycdn.com/files/b2414622-e0cd-43d0-b02e-4c2bbb51f48d/arrl_general_class_license_manual_free_download.pdf
    • https://uploads.strikinglycdn.com/files/3444dd93-9138-409c-80f7-e86081db4f5a/la_divina_comedia_infierno.pdf
    • https://s3.amazonaws.com/dazinibonofobi/all_android_mobile_name_list.pdf
    • https://s3.amazonaws.com/kufazete/november_newsletter_templates_for_teachers.pdf
    • https://uploads.strikinglycdn.com/files/90688ca0-1f88-432a-ba5b-a4f0e803b663/brother_hl-2240_laser_printer_price.pdf
    • https://uploads.strikinglycdn.com/files/ab6153f1-55c3-4ce0-baae-3f4db136b98c/23948818162.pdf
    • https://s3.amazonaws.com/jujojomojemiz/informantes_claves_en_una_tesis.pdf
    • https://s3.amazonaws.com/jirebonudur/aamir_khan_transformation.pdf
    • https://s3.amazonaws.com/sesafefanulokam/insignia_bluetooth_bookshelf_speakers_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb00.bin
dc5d8afd77b0ba48745e5139ba419111d571cc8196d61bb00d0cad91f2582611		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB00 5348 bytes
font_01_sfnt_off00010d11.bin
0ba04386c2a7a52d4d48fb6357ee3c1a8d3e60913b1c6da4300523a8b24cf0cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D11 11028 bytes

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