Malicious PDF — malware analysis report

Static analysis result for SHA-256 afad69c7c28110ba…

MALICIOUS

PDF

86.4 KB Created: 2021-03-21 02:01:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03d9a2ef9df41b1d37b78288ad46de97 SHA-1: 4d65c540d5824245d03d1230bec054ed07482dfe SHA-256: afad69c7c28110ba778dd17be167e789cb3114ff30f4ffb85c82eb538d492b42
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI was found pointing to 'https://druttle.ru/award?keyword=augusto+boal+games+for+actors+and+non+actors+pdf', which is likely a phishing or malware distribution URL. The document body, though heavily obfuscated, suggests a lure related to a document search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/award?keyword=augusto+boal+games+for+actors+and+non+actors+pdf
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5ff03cbb0a69b.pdf
    • https://static.s123-cdn-static.com/uploads/4379844/normal_6009029069089.pdf
    • http://coolvdomaion.online/crise_falciforme_o_que7maok.pdf
    • http://muldwych.com/jexupalibibamei0xro.pdf
    • https://cdn-cms.f-static.net/uploads/4465538/normal_5fd0a9b2542db.pdf
    • http://kapusta.pro/33516018776vkl4h.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://7e079b21-6cfc-4bbc-a8af-001f4930a7f2.filesusr.com/ugd/f66805_71d082f9b5094d1987bdc1a939960320.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f6774a1b-0b94-4d0e-ae4d-6aac792932d2/18771843498.pdf
    • https://uploads.strikinglycdn.com/files/aeeec689-f67d-43c1-b614-fa6f2697411a/55250938314.pdf
    • https://s3.amazonaws.com/bevekizadoxuj/address_labels_template_32_per_sheet.pdf
    • https://s3.amazonaws.com/wemofodi/foxtel_movies_channel_guide.pdf
    • https://s3.amazonaws.com/divelatoxa/nuxokovewofuxofofas.pdf
    • https://b993c520-4fc9-488d-8dda-35d8b3dc2713.filesusr.com/ugd/6f5492_3926214a466c442cbb11501dd2f9be6a.pdf?index=true
    • https://c5c27394-2042-4749-9b39-d1c24dcbd9f0.filesusr.com/ugd/e9b987_b06b7b794ce24dcfac41e9f264dfb288.pdf?index=true
    • https://5926284e-b61c-4ed0-95e5-27b9feedd2c3.filesusr.com/ugd/50c35f_62fd1989c7fa4d768d30501e063f0325.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b1b08dc1-6b53-4602-92fe-6709bc93b35c/tom_sawyer_and_huckleberry_finn_2014_english_subtitles.pdf
    • https://s3.amazonaws.com/nopomewegobij/chess_puzzles_mate_in_2_free.pdf
    • https://uploads.strikinglycdn.com/files/afa867e7-66bf-4899-90d0-4b86c7ccb685/2005_jeep_grand_cherokee_5.7_hemi_engine_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/69144942-d7c1-4006-b6ca-e64e4910ad59/matlab_legend_column_title.pdf
    • https://uploads.strikinglycdn.com/files/c760c874-7e54-4a0f-b8c2-b7c38607b5d1/lukinimafanusuzadopese.pdf
    • https://f4e740b0-69d0-4d5c-a0c7-362dc6b2ad6d.filesusr.com/ugd/0356fc_2f054b14007a4e6b8662021da620038f.pdf?index=true
    • 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_off000106b2.bin
22a7290c1327cfdcc73b05cb2689e77e98b8c6452a86fff60620d04f69af8c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106B2 5436 bytes
font_01_sfnt_off00011914.bin
9b2253af3a83c62b8e1519820ad5acff72edc92aa887f96672dc40cecf523fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11914 10784 bytes
font_02_sfnt_off00013d58.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D58 4324 bytes

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