Malicious PDF — malware analysis report

Static analysis result for SHA-256 b991ebd88470f7a2…

MALICIOUS

PDF

92.2 KB Created: 2021-03-16 21:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 10cebadf66d630ae841ea222b677f3e4 SHA-1: 42c6fdcd593b44cfcdfba525895c611ea1d7a110 SHA-256: b991ebd88470f7a2c3576a22407cb5c75055a248ef81e9b7a1d9986020895a35
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://seumenha.ru/wix?keyword=this+is+for+rachel+voicemail+story+copy+and+paste PDF link annotation
    • http://xapowuxif.mywebcommunity.org/bilingualism_in_linguistics.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/dedupipapekot.pdfIn PDF document text
    • http://webomiwizux.22web.org/wozejaparexapuwaj.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/16067854347.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/proakis_digital_signal_processing_solution_manual.pdfIn PDF document text
    • http://suzupuwejal.mygamesonline.org/icao_annex_11_download.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/puroferogubix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jonora/lady_of_the_lake_witcher_3_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/5668319902.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/fuguwiv.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/sugesadexasaguredulejide.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/44919087595.pdfIn PDF document text
    • http://dapizodipe.myartsonline.com/83975513233.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/febitifudi.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/kusititigugezenaxun.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/dubufato.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/beginner_bookkeeping_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/ganesh_bhakti_song_dj_mix.pdfIn PDF document text
    • http://kubomefewofumim.atwebpages.com/what_grade_level_is_a_lexile_score_of_1500.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/application_for_schengen_visa_fillable.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/4007816594.pdfIn PDF document text
    • http://xitamedasunur.rf.gd/pdf_watermark_remover_app.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D7 5508 bytes
SHA-256: 105e64834e5a312de466e2f293aa74c3f635d628990b59a7e66d8eabf38375cc
font_01_sfnt_off0000f871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 2360 bytes
SHA-256: 9cf89d3e2ee18377347fb528286ea3b4dfb3f374c741c225e133820dbbbfa8b2
font_02_sfnt_off000102f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F6 11156 bytes
SHA-256: 7de19321d0ad4c30bc1f32e6d4d8ca5345a100f2ff93f2b5bf1bd68c004f1ee6
font_03_sfnt_off0001291c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291C 19736 bytes
SHA-256: 78e96ca051535f3f6379829e3094a9ba4a9c5dcf8a3d05509d7a6c459e5354e7
font_04_sfnt_off000147e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147E9 17476 bytes
SHA-256: 0dcd39c613f879bda249984ce562ed2cff3e05a45efb5f2ef7afbd3d0c76982e