Malicious PDF — malware analysis report

Static analysis result for SHA-256 068f0fe6e872fb2b…

MALICIOUS

PDF

80.1 KB Created: 2021-04-07 04:28:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 2dd2ea8b2e91af77e9496da3f957fd73 SHA-1: d4cd33333f1b8a8b3ad8b970ae6831e2ca562c0d SHA-256: 068f0fe6e872fb2b4f73663d4e40a9b856242b3008bc2a3c9a19310d922ce7e9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes abused for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/wix?keyword=national+mah+jongg+league+2020+card+pdf PDF link annotation
    • http://keto-menu.online/bomberman_64_n64_romm2dja.pdfIn PDF document text
    • http://trysucre.pro/la_la_la_land_piano_sheety7ms2.pdfIn PDF document text
    • http://tevituvodejifep.mywebcommunity.org/65382572597.pdfIn PDF document text
    • http://natfreshik.fun/how_long_to_keep_infant_insert_in_chicco_keyfit_30vksyh.pdfIn PDF document text
    • http://hookup682.site/67517165265ee9x.pdfIn PDF document text
    • http://trylait.club/the_voynich_manuscript_by_unknown1ipla.pdfIn PDF document text
    • http://pakupuxojopef.getenjoyment.net/fiwumibub.pdfIn PDF document text
    • https://cdn.sqhk.co/lunexubafexo/ghMjehd/tool_boxes_lowes_sale.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/jatakonozax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_603ec4775cca0.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/PiieijQ/badri_songs_audio.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/39728596284oiy0o.pdfIn PDF document text
    • http://agentsecure.space/cual_es_la_estructura_de_un_texto_historicoj6psi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_603b01cbdf861.pdfIn PDF document text
    • http://pifanaliriwabo.mygamesonline.org/63804581111.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jonora/tixezemobekinuguwuwaf.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/luzitiso.pdfIn PDF document text
    • http://loxupobupibim.atwebpages.com/oceb_certification_guide_business_process_management_fundamental_level.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/jeraranokeruw.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/cbt_worksheet_for_anger.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/11_22_63_ending_explained.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA66 5592 bytes
SHA-256: d5f099ade1dc727c5e65c1fd1610082c3bf71510bedced052f186fe414b6241c
font_01_sfnt_off0000fd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD3D 11140 bytes
SHA-256: 1ee250a05a07e2b04715bb9123a6e1891997c7cf3d494dcf2c224cd769de2af2
font_02_sfnt_off000122ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122AD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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