Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b4f198482d43bd…

MALICIOUS

PDF

75.4 KB Created: 2021-04-20 13:13:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cc8494da332c391ca853568e89a53481 SHA-1: 58787aa7a40396f6718abdadaefc35e4025b5c8b SHA-256: b4b4f198482d43bd01df4417641db3b8ef8d6e7ecb09cc44bda002bfdcc5dc09
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 0.9991

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://jacksth.ru/strik?utm_term=brother+mfc+6490cw PDF link annotation
    • https://cdn.sqhk.co/masemojenud/GibR8jg/65075416423.pdfIn PDF document text
    • http://najelipopusivut.getenjoyment.net/jitowozukevawubed.pdfIn PDF document text
    • http://aydym.club/whole_brain_power_bookgism0.pdfIn PDF document text
    • https://cdn.sqhk.co/vubiwete/nz0nic7/65255330282.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/i9phiph/namudorijonowefelixoso.pdfIn PDF document text
    • http://revershjtb.site/catalog___panasonic_2019la2ug.pdfIn PDF document text
    • http://lady-bug.club/jump_plus_stores_dieppe_nbxnm67.pdfIn PDF document text
    • http://zuviwadakaji.22web.org/luzalibimuzitibere.pdfIn PDF document text
    • http://rivepozepuxar.mywebcommunity.org/konsep_manajemen_pendidikan_islam.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/rawiku.pdfIn PDF document text
    • http://guwivup.iblogger.org/bhairava_tamil_movie_video_songs.pdfIn PDF document text
    • http://zajowidased.iblogger.org/5585521840.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/bJged6q/mupigubiwulakuzuzer.pdfIn PDF document text
    • http://juzufezike.mygamesonline.org/social_media_management.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/pjdiizn/mumazaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojezemuxeg.epizy.com/15426827937.pdfIn PDF document text
    • http://melaworogafema.epizy.com/albion_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/67489534992.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/maytag_front_load_washer_error_code_f03_e01.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/fikoviwerorisovuvaj.pdfIn PDF document text
    • http://kenuzuwemonuda.epizy.com/soft_drinks_manufacturing_project_report.pdfIn PDF document text
    • http://tijexaxa.epizy.com/bifogisemesafu.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/72556694.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/arcsoft_photoimpression_4._0.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE650 5384 bytes
SHA-256: 5839847d21265341d8e963c31220617219cff43090aa4b61759b5546d17e2bbb
font_01_sfnt_off0000f899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF899 11816 bytes
SHA-256: 0fff4ebaa0fa8160658ab8078ad8014faa785b1dd703764b32b9d4400c581f5a

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