Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad077209992f9fca…

MALICIOUS

PDF

78.6 KB Created: 2021-03-20 23:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 1102d747a6d0988521216c96be94c0ad SHA-1: 95b715061347b5eb236e98000322a7d48d2108fb SHA-256: ad077209992f9fca8e5eb8c6bf6b114f5e0abed4958c4d2bc1f0a3a3635b046d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a malicious intent to redirect users. The ML classifier and ClamAV detection strongly indicate malicious content. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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 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://jumiwimov.ru/award?keyword=biblia+de+estudio+apologetica+holman+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467038/normal_5fe09f75e4219.pdfIn PDF document text
    • http://baltika-trans.com/nordictrack_cx_925_pricekqgcv.pdfIn PDF document text
    • http://fesurowejo.mywebcommunity.org/10446190526.pdfIn PDF document text
    • http://werikipirojenob.scienceontheweb.net/57869620208.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461511/normal_5ff1dd24bd0f5.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/la_la_land_epilogue_advanced_piano_sheet_musicgfg36.pdfIn PDF document text
    • http://soul-felt.com/how_many_spell_slots_does_a_level_4_paladin_have45qnt.pdfIn PDF document text
    • https://vasejafarobi.weebly.com/uploads/1/3/1/4/131454155/defamikuti-jujufepifuxi-jugisi-muxuxi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470683/normal_5ff583e575278.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/bjb85hb/73479696095.pdfIn PDF document text
    • http://interbank.link/scaled_boundary_finite_element_methodjme25.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/2fjdugc/candomble_religion.pdfIn PDF document text
    • https://muvesajaduxu.weebly.com/uploads/1/3/4/0/134012660/tebuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480750/normal_60534c8f5cb91.pdfIn PDF document text
    • http://raffle.website/kafexejerilakejafgb0t.pdfIn PDF document text
    • http://basagutidabe.sportsontheweb.net/perimeter_of_composite_shapes_worksheet.pdfIn PDF document text
    • https://fokutape.weebly.com/uploads/1/3/2/8/132814024/luzasurilasegi.pdfIn PDF document text
    • http://gesetaxoxu.sportsontheweb.net/sogegamela.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/mokuwanibof/twilight_books_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/22680981461.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/cracked_play_store_apk_no_root.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/bureaucratic_organization_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/base64_decode_image_android.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_off0000ea98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA98 5660 bytes
SHA-256: c56213360dd899d7502c11e9ac999357b6b952755db2630b5eba05105368e3b3
font_01_sfnt_off0000fdb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB4 14112 bytes
SHA-256: 621fcefa8e828f77eb0a35a58a301e09df909ffd266ad97f6a0b78f88cc0c01b

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