Malicious PDF — malware analysis report

Static analysis result for SHA-256 673206f250ac43b8…

MALICIOUS

PDF

64.8 KB Created: 2020-12-09 21:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68725dcf2f51e3865370ef5a95ddd96f SHA-1: 764b5f0868185e0c849434dad8dee2d914961aea SHA-256: 673206f250ac43b8ae48b50ab4e78679ac892885fdf4e8ab9267e69d60c66433
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffking.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to an 'annual report', consistent with spearphishing tactics.

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://traffking.ru/aws?utm_term=omers+annual+report
    • https://cdn-cms.f-static.net/uploads/4447265/normal_5fbd8662c7c60.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/farowug/90000764204.pdf
    • https://s3.amazonaws.com/pazerogasarinu/buds_gun_shop_lexington_hours.pdf
    • https://s3.amazonaws.com/garorowa/permenkes_tentang_akreditasi_puskesmas.pdf
    • https://s3.amazonaws.com/zabevog/19794738195.pdf
    • https://s3.amazonaws.com/vavapekadoliti/41623058279.pdf
    • https://s3.amazonaws.com/jadere/bubemagamesabebukuvije.pdf
    • https://static1.squarespace.com/static/5fc1057cc30a162e0c5324ce/t/5fcf3f04509e863c682c83e8/1607417605439/ikea_united_arab_emirates.pdf
    • https://s3.amazonaws.com/mipizaju/book_release_standing_banner_images.pdf
    • https://uploads.strikinglycdn.com/files/0b9cb71d-eb06-4426-a4bf-f1c45c258b6e/benq_gl2450_specs.pdf
    • https://s3.amazonaws.com/juvetaso/almacenamiento_virtual.pdf
    • https://s3.amazonaws.com/lanorolowu/27077047066.pdf
    • https://static1.squarespace.com/static/5fc654295687f52b6ba616b7/t/5fc86bdef97c193540efb70b/1606970336153/rubotifaxobo.pdf
    • https://uploads.strikinglycdn.com/files/46cf9295-3e8d-44b1-97fe-ffcba10a8aa7/49388348810.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_off0000c0e5.bin
578f11f7b97a5202eb638889302e76a760c7e73acfe20a1c5a9e7852f5a1a824		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E5 4992 bytes
font_01_sfnt_off0000d1c1.bin
2cb41b913e112a43043b9081eda963da60cb1e08eb502de23fff61cb23db4438		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C1 10820 bytes

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