Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bae63a1451693f2…

MALICIOUS

PDF

77.6 KB Created: 2021-03-19 13:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7525dbaaa62c954aa5f478d400f6948 SHA-1: d9ccd3a1e0f862cf200e7808c8205f7dc5fef98a SHA-256: 6bae63a1451693f2562c3abd110e91908d5832dd3313d0b6519ea8be0fd14ad9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to a 'webquest'. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://leonvi.ru/wix?keyword=food+chains+webquest
    • http://zarewubizeno.mywebcommunity.org/dark_blue_trench_coat_mens.pdf
    • http://zalavovira.22web.org/44849018484.pdf
    • http://miribut.mywebcommunity.org/logitech_z_5500_price_in_pakistan.pdf
    • http://vabaxowerad.iblogger.org/waruvufeku.pdf
    • http://bimemonok.22web.org/hi_point_4595_carbine_disassembly.pdf
    • http://lutirojibafap.sportsontheweb.net/brief_answers_to_the_big_questions_book.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://c8a164a7-2549-4056-b209-d27d417f800b.filesusr.com/ugd/136d3d_5d5c6608d5cb4ff7a776472e314873cb.pdf?index=true
    • http://fibotujipisozu.rf.gd/digogarosofumapiraze.pdf
    • https://uploads.strikinglycdn.com/files/9bda8339-5541-4b93-a310-2753a688f8ae/how_to_make_screen_smaller_on_mac_with_mouse.pdf
    • http://dixolasafu.epizy.com/67149023566.pdf
    • https://0efdb04f-128a-4c0d-ace4-8b312723ebcc.filesusr.com/ugd/5508f4_36b88eef881b45eab3dc37f3b33a3d46.pdf?index=true
    • http://gitinilu.epizy.com/26656005724.pdf
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_bb7d8e2493104dafbe112cf336abe234.pdf?index=true
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_46f899029953440c93fcdc6d6b5ae4f7.pdf?index=true
    • https://ac402fee-74f4-49a6-b5a4-6a03c6a057de.filesusr.com/ugd/b0cd75_a362093ab61a423abae1de6791260dd3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0f3012ba-fc6a-4766-b77c-94e6d439339e/how_to_change_toilet_seat_on_toto.pdf
    • http://mixeduteni.epizy.com/calculator_ribbon_for_sharp_el_1197p.pdf
    • https://11484d69-1612-41b9-9199-165df1f08223.filesusr.com/ugd/e2f197_6cb383a5c2a74320b1f240d7e35953b9.pdf?index=true
    • http://bototiluwoge.atwebpages.com/xojevevadumizagi.pdf
    • http://juruxevidenax.rf.gd/carbon_footprint_article.pdf
    • https://4095172d-bd2f-4181-91d7-dd424e653400.filesusr.com/ugd/df73ab_320fcf47a53e4ccd8772f2753f22c0be.pdf?index=true
    • https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_c36d493c116941239bcdaaa19ec7319a.pdf?index=true
    • http://gedikoti.epizy.com/cmaa_risk_management_guidelines.pdf
    • https://b2f3f1fb-4f3f-4d5d-be65-f5b10dce6288.filesusr.com/ugd/735189_a3d0cf7a5e5e40bfbb2c587c07409ba0.pdf?index=true
    • http://fevirafi.rf.gd/how_open_safe_mode.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_off0000e4b8.bin
e77a247e7cf6578188a1f2bf9a54583d03b27f3066522cf5b1a0ad0ee0b2d9f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B8 5092 bytes
font_01_sfnt_off0000f60b.bin
6bceb15527ad2c8e7be7d02c4378918ff4c60e5733f00b18e649ff22244e3bf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF60B 10752 bytes
font_02_sfnt_off00011aa2.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA2 4324 bytes

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