Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee7f0701f6d00f8…

MALICIOUS

PDF

78.7 KB Created: 2021-04-17 20:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5addcfec7f32100ddb560d3f3bc6dfb6 SHA-1: dc30bf6fc66e64527dd32fff0ef4af442e1f75c6 SHA-256: cee7f0701f6d00f8d1a3cc839bdc8d660486af0be44886f50d76474aef63de27
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing page or malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=how+long+to+dehydrate+beef+jerky+nesco
    • https://cdn-cms.f-static.net/uploads/4454303/normal_606d9526a457a.pdf
    • http://zagavexakagin.mypressonline.com/advanced_brazilian_jiu_jitsu_techniques.pdf
    • https://cdn-cms.f-static.net/uploads/4445129/normal_606591449b728.pdf
    • http://ramifapufebi.scienceontheweb.net/phase_2_phonics_activities.pdf
    • http://mujabelor.mywebcommunity.org/12463096304.pdf
    • http://masterpowerpoint.com/get_your_guide_last_supper_milanwyd5o.pdf
    • http://xufelaketodo.getenjoyment.net/sejarah_batik_malaysia.pdf
    • https://cdn-cms.f-static.net/uploads/4368237/normal_6025970b118c8.pdf
    • http://bumaga.bz/goditifogjw3ut.pdf
    • https://cdn-cms.f-static.net/uploads/4457563/normal_6035d677e596d.pdf
    • http://wotidoteked.mywebcommunity.org/anexo_2_simples_nacional_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4383798/normal_5feccbcaf130c.pdf
    • http://rowowevu.mypressonline.com/stannah_stairlift_420_service_manual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mavixu/kalpana_all_songs.pdf
    • https://s3.amazonaws.com/venunamazozuzo/what_is_the_number_one_selling_essential_oil.pdf
    • http://tuxabatadifu.onlinewebshop.net/visual_basic.net_download_for_mac.pdf
    • https://uploads.strikinglycdn.com/files/09346f33-6828-46f5-b9ed-0073940e1cb5/jajadejuxeli.pdf
    • https://s3.amazonaws.com/fuwuzerijofa/adding_fractions_worksheets_7th_grade.pdf
    • https://uploads.strikinglycdn.com/files/3aa16cf7-2bba-41ac-9fcc-b52eefdfd89b/el_rancho_coronado_hotel.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5ba.bin
f63c9b91f39b81135d86fc127fac0583d1b384a771446dd79503a1e3e32fde54
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BA 5720 bytes
font_01_sfnt_off00010944.bin
0a79fb6cecea3bacbfceb4eb3e10d2ac19107b113f638bae08d6c35bc98b3bbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x10944 10004 bytes