Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6ba3d86ff8ba2c…

MALICIOUS

PDF

79.3 KB Created: 2021-03-21 08:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ecd09aae1d8719c75127eb6c79c2b9c SHA-1: bd8f8cbb3d56c5195e28702c336c84fac09db3ea SHA-256: 6f6ba3d86ff8ba2c0af1e6f65f383d34aaaf97d507bbc1166af0037423d547fb
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded external URI pointing to 'https://leonvi.ru/wix?keyword=benjamin+discovery+mods', which is likely the primary lure. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the presence of the malicious URL and the detection signatures strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=benjamin+discovery+mods
    • https://cdn.sqhk.co/ruwonumatag/Ym8hfgc/iihf_world_hockey_championship_jerseys.pdf
    • https://cdn.sqhk.co/vumusokutil/ekgjzjh/new_ringtone_iphone_2020_download.pdf
    • http://umniashka.ru/52873207122pdozc.pdf
    • https://cdn.sqhk.co/pezolaje/jfxSies/to_the_moon_gameplay_length.pdf
    • http://liketime.online/cambridge_10_test_3_listening_answersih4vl.pdf
    • http://confirmationhelpcenter.com/economics_for_dummies_202078buc.pdf
    • https://cdn.sqhk.co/kajutizikodu/AghggLU/cooking_dash_tips_and_tricks_facebook.pdf
    • https://cdn.sqhk.co/kubepugemaki/Ki6rhhf/65397781282.pdf
    • http://vitrinachel.ru/chamberlain_clicker_universal_remote_control_manualrorez.pdf
    • http://shop-onlain.fun/sad_love_breakup_photos44zaa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f86d6e2f-3da9-46d1-9692-4483c0e819a4/ditokelupirazavibudu.pdf
    • https://s3.amazonaws.com/kelageketisefuv/77847248249.pdf
    • https://uploads.strikinglycdn.com/files/299bb174-57dd-41fe-9766-86c5f69b19e5/the_challenge_war_of_the_worlds_2_episodes_list.pdf
    • https://s3.amazonaws.com/zebarufuridorur/ritomuxotenuguroxuvom.pdf
    • https://7a1f2a0d-094a-4466-88af-72a4af93b9fa.filesusr.com/ugd/22739b_128cc30cfb814242a98d29d5ac9d9f49.pdf?index=true
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_85de2fc713444672863e085a8f0bef18.pdf?index=true
    • https://uploads.strikinglycdn.com/files/040b1121-4fde-4788-b792-c6e3f80aaa34/1893314.pdf
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_8cd3090a00bc41549db81bb48849d5a5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a8d3a85a-155a-4210-8a2c-d19e4b228a00/how_do_i_update_my_samsung_printer_software.pdf
    • https://uploads.strikinglycdn.com/files/594162ce-b33c-43b9-a04a-3c0d851484d3/logitech_z-5500_price.pdf
    • https://d4cba69e-f3c5-4a64-9e40-69ba24924691.filesusr.com/ugd/b73feb_faa8a3738a9446a38c7d813cd02e7467.pdf?index=true
    • https://s3.amazonaws.com/fomudebipefasu/giwakodonilibeju.pdf
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_8aeb6a67eca54bf58378c315daeb3351.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e4639d02-43d0-45c4-80fa-f0dded03544d/likujajatoferinajad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb46.bin
523417c3359772a73a0376d9ce19377c8225101c37de08219d2a26a1c9a90854		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB46 5048 bytes
font_01_sfnt_off0000fc55.bin
874977d31be2e62938d5d17307f98157cde57d2551a76caf2bffcf3172891204		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC55 10524 bytes
font_02_sfnt_off00012053.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12053 4324 bytes

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