Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0cc089f8181c29…

MALICIOUS

PDF

325.2 KB Created: 2021-03-01 00:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 7effcf47f474f71c8e8cf23e0c74fba3 SHA-1: 5c71faba00bb957627954ec20a7622198c1f1e97 SHA-256: db0cc089f8181c2942875608eb4af5a7156b902190156da405f9bba214624a2b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URIs are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9834

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://golowaki.ru/wb?keyword=how%20old%20to%20donate%20blood%20red%20cross PDF link annotation
    • http://mmamba.ru/tawegemjky3.pdfIn PDF document text
    • https://cdn.sqhk.co/marezotije/jccEYhf/marine_landing_b._o._t._m._menu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500446/normal_5fcce12ca3c00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4531523/normal_600f7391e2d77.pdfIn PDF document text
    • http://blancer.xyz/google_slides_templates_simpleb2zck.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374843/normal_5fc5f65267520.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/requirements_to_get_a_job_at_ross.pdfIn PDF document text
    • http://yourcy.com/57733265602wvw13.pdfIn PDF document text
    • http://presentinsta.online/how_to_make_a_claw_out_of_paper_step_by_stepqn3te.pdfIn PDF document text
    • https://cdn.sqhk.co/jobasalem/bP15qr6/watch_amazing_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/vilitemeru/jbhaHV9/wezuvibonesodufu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405193/normal_5fd27cfee6d4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fivebo/platform_sneakers_in_style_2019.pdfIn PDF document text
    • http://refewededuxita.epizy.com/robakizo.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/21642779967.pdfIn PDF document text
    • http://jixenefotudak.epizy.com/geography_objective_questions_and_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004bf25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF25 4864 bytes
SHA-256: 33d369b2532e51ea80f88fddd94c44445c7d188b65ae6e0ff6d3b9f2929ea8b4
font_01_sfnt_off0004cfc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFC2 11856 bytes
SHA-256: 4f136f73b34d2de6adc971c86cc1785ac95ac8839bc9b6123da70abf64fbeda6
font_02_sfnt_off0004f7c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7C9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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