Malicious PDF — malware analysis report

Static analysis result for SHA-256 155049fe1e663383…

MALICIOUS

PDF

255.3 KB Created: 2021-03-14 05:06:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb319af964accae8b4bac08972ff922e SHA-1: 1ee0dd9640ffcdcaccb0d4ccaebbfffe248d0e82 SHA-256: 155049fe1e6633833e3897558d4d6fffa9557d56372a96484ce588f79893f0cf
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing-like page. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7671

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://botokaw.ru/strik?utm_term=how+many+points+are+scrabble+letters+worth
    • https://ninibukakogim.weebly.com/uploads/1/3/2/8/132815385/wikividugidu.pdf
    • https://kiwitelovig.weebly.com/uploads/1/3/4/3/134358902/fefemijijupiro.pdf
    • https://zademufexek.weebly.com/uploads/1/3/4/7/134765537/nezivot.pdf
    • https://diwopasod.weebly.com/uploads/1/3/4/4/134475510/lajenizixam_baxojenakosig_gujepepepo.pdf
    • https://cdn.sqhk.co/vorebilifi/ihdJTjj/progress_of_project_definition_statement.pdf
    • https://cdn.sqhk.co/guledijuxi/haZhdhb/31504751349.pdf
    • https://japutiluzot.weebly.com/uploads/1/3/5/9/135991977/3429101.pdf
    • http://fedorahosted.org/lohit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kofipazefoleris.epizy.com/papyrus_font_google_docs.pdf
    • https://uploads.strikinglycdn.com/files/303cdba6-0356-46dc-b3eb-a8007ad1fe46/29425472809.pdf
    • https://uploads.strikinglycdn.com/files/bc0db6b6-86c9-4159-bfea-73871d3e6ed3/how_much_is_a_kfc_double_down.pdf
    • https://s3.amazonaws.com/sumesawoxajew/music_banuso_by_omoniyi.pdf
    • https://s3.amazonaws.com/nolarifaforuxop/blog_template_wordpress_plugin.pdf
    • http://gerutinikokowa.epizy.com/37216719169.pdf
    • https://uploads.strikinglycdn.com/files/7564dfbb-df6f-446f-bc10-fbd4a163950a/what_is_or_gate_in_digital_logic.pdf
    • https://uploads.strikinglycdn.com/files/414d5411-a963-4428-8d1e-6b3ac366a4c2/49832751107.pdf
    • https://s3.amazonaws.com/lotibabakuj/hempadur_mastic_45881_data_sheet.pdf
    • https://uploads.strikinglycdn.com/files/145b8265-8a6d-4bfd-8381-853b0f8034d8/97414043458.pdf
    • http://memaded.epizy.com/cinema_4d_basic_tutorials.pdf
    • https://s3.amazonaws.com/nodetuxapabara/cute_printable_grocery_list_template.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0002e806.bin
d26e4112b3632e2be63625c4abe8855ba92ba48bf0db69ea7b4dd1acebeaaa3c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E806 45472 bytes
stream_010_off0003b4c4.bin
3ee446eade67eb44d90294be735af64e56f0c29b5690e7b308c889710d157604		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3B4C4 29144 bytes
font_00_sfnt_off000261ff.bin
191d6f779d521d3d945d61d46d100d69cf18731748afe4b34e1fcefacff464d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x261FF 38920 bytes
font_01_sfnt_off0002d58f.bin
8b86bcd791a2e98f73d1ab15f0b0867e1b2140abf8932a751422c904f3fc0d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D58F 5468 bytes
font_03_sfnt_off00033565.bin
a8648ea36b3089ba0bbea400fceb66c1673da001642bee9a37e40ab066a93641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33565 1720 bytes
font_04_sfnt_off00033e0b.bin
5030a47cd327cae26ba664cb41e962a99bb1f4d1b4b209b7f5f631a6abc7b2ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33E0B 46456 bytes

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