Malicious PDF — malware analysis report

Static analysis result for SHA-256 719117f31a46c3dd…

MALICIOUS

PDF

78.2 KB Created: 2021-05-21 13:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 05860507cb1ed3e4bf577706a98ed9bc SHA-1: b844b0469a3475a9076a26ba321d6f8afb3ebf06 SHA-256: 719117f31a46c3ddfcddef87fc4ec8d3d2b4959eb99e9fe9f207a6080b8dc2b2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing and malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to direct the user to a phishing site or download further malware. No scripts were extracted, but the presence of a malicious URL is a high-priority indicator.

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://gimoguvi.ru/wb?keyword=how%20to%20work%20out%20indifference%20point PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392463/normal_6039f36102e40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424011/normal_6063591c3849b.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/jixeremipet/38509264589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1d05d43-ead8-45b0-b25e-c44c1dad8ea2/dc_national_art_gallery_hours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c2b5d16-d647-4ad7-8a59-ec07f2579f26/what_are_the_5_biomes_of_the_world.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/96782245095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee2c00cd-7ac5-462c-8fcb-da9a9d5b48d6/40861739454.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/b._ed_online_form_2018_bihar.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/jagilekuzojis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79e1e528-abb0-471e-a072-2d58b147e7a0/what_is_myth_all_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60dcd318-9d26-4aa1-9f9a-ace9f9ea2429/input_output_memory_devices_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c569a34-e864-4cda-b9fb-e87ff292e489/gubekunufozumusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7a526b7-73ee-4c93-b80b-6c17abd93a43/what_does_bills_of_exchange_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cdbb49b-8e4e-4aef-bcbe-79df29805587/40385212101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/305bd17a-3287-4ae7-b880-d0eeb0f12c3c/tuwemozolifugoroxat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7626932c-7fab-4f4b-ad67-8237aa7ef57e/nivurizatutebodeku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e4ff82-2797-4b6c-b5bf-1ac6976c317f/leadership_secrets_of_attila_the_hun.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/21155888060.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/alien_x_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a7c393a-a1dd-493d-a457-0e505e248a45/mazerixejifelura.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_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 4844 bytes
SHA-256: 8bf8354e534ec93c372aa47e089753693724857a3d2db942533e7fe297aaaf1c
font_01_sfnt_off00010732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10732 10496 bytes
SHA-256: eed8cc975362a9c7b61ba688bf8cb98be89821b2b314268c41a8bbbf0c099340

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