Malicious PDF — malware analysis report

Static analysis result for SHA-256 58bbdaf37e2b75cd…

MALICIOUS

PDF

69.8 KB Created: 2021-02-18 03:04:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a3c6e25727c5297432aaff69fb8b5759 SHA-1: e0aecfa5eb97c0ad7705453444d2adc5b9187b40 SHA-256: 58bbdaf37e2b75cd8b63e5b62e8975213e5f29cbe4b147afe72dbd45ae401ed3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wix?keyword=5e+artificer+returning+weapon PDF link annotation
    • https://cdn.sqhk.co/voguzasijur/gjjjhic/fish_eat_fish_3_player_games_unblocked.pdfIn PDF document text
    • http://immorta-cross1.club/sobupiga9pxpn.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/EhjjgTx/24752179874.pdfIn PDF document text
    • https://dumugukof.weebly.com/uploads/1/3/4/6/134647937/xubafisivadena.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_5ff89343a1df4.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/ijgfgjd/4635459199.pdfIn PDF document text
    • https://damasidegiked.weebly.com/uploads/1/3/1/4/131411688/pebide_jomigepu.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/biagejf/maxxis_torch_bmx_tires.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/jiaXISf/fiberam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410186/normal_5fcc3b7f56e3d.pdfIn PDF document text
    • https://xowitato.weebly.com/uploads/1/3/0/7/130776358/guxazamibu.pdfIn PDF document text
    • https://cdn.sqhk.co/tegiriwepaj/gidheB4/vudojubiragunalevilofo.pdfIn PDF document text
    • https://cdn.sqhk.co/bezorufuv/ak5fifv/new_failarmy_videos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_6020be6b93864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443371/normal_601c64eda3ea0.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/mudurixo/balance_sheet_example_small_business.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/wigowodugasabajedelimiv.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/roxudewitisadowutosuz.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/science_fiction_writing_template.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_off0000d68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68C 5092 bytes
SHA-256: 208d2927c04cfa7dbace36282bed903ed11d8363888451d5fd0fb8ba1215e787
font_01_sfnt_off0000e807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE807 9896 bytes
SHA-256: ffd0e1caff00159ca2a8379b19c24c8e035c60e15763d5411a1af862e833e593

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