Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd8cc2112c000f4…

MALICIOUS

PDF

77.4 KB Created: 2021-02-27 16:47:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e1da9eba64c87f913f658b2e3e5f767a SHA-1: 2dc588cf4acfe919e5e1649613236f12bdb77a60 SHA-256: 5fd8cc2112c000f4105db772256ed14f5b42f673aeb9da624b621d811c19257b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs users to a URL disguised as a helpful guide for a common household issue. This URL is likely a phishing lure to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of embedded URLs suggests a phishing or credential harvesting attempt.

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://pelibifir.ru/123?utm_term=how+to+fix+a+washing+machine+drum+out+of+alignment PDF link annotation
    • http://vumexovuvelafe.medianewsonline.com/windows_batch_for_loop_command_output.pdfIn PDF document text
    • http://lovefoxesi.iblogger.org/fusedudivofor.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/ifQKgh9/nilutan.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/jehgfif/pobilibe.pdfIn PDF document text
    • http://vabelenuketubup.22web.org/metal_gear_solid_1_how_to_beat_psycho_mantis_on_ps3.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/RO4hjhg/helicopter_for_sale_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/7H21qsj/danilojesekas.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/u6Oidf0/semipunegonulelaw.pdfIn PDF document text
    • https://cdn.sqhk.co/zeragekub/jgbgfgd/virgin_pulse_max_buzz_login.pdfIn PDF document text
    • https://cdn.sqhk.co/lisupixiwe/S66has4/second_galaxy_corp.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/gavapozalilup/accounts_receivable_balance_sheet_presentation.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/biwor.pdfIn PDF document text
    • http://tubupokus.rf.gd/zudivofaluwupitoxed.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/odisseia_homero_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/countif_not_blank_smartsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/probably_synonym_formal.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_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 5556 bytes
SHA-256: f5ba2e3efeac5f663f84d8484435957f2f8e303c66aee134487644e0ea9f0f34
font_01_sfnt_off00010468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10468 10596 bytes
SHA-256: 67daca86fc5794d32624ff728aa88a8f33f484dad13709e5cc0b80095f1d9e97