Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f0c47895df9305…

MALICIOUS

PDF

242.1 KB Created: 2021-03-24 17:06:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3b63ec992a3232b7b0ac78fb2be1e96c SHA-1: 1df1628b0ddd8bf3983fc1194cb3f9aab54c1db4 SHA-256: 32f0c47895df930563780aeb6b43fcee6156cafaebf8ef2449596f2c3dd91b44
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI that leads to a URL disguised as a free PDF download. This is a common phishing tactic to trick users into visiting malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://leonvi.ru/award?keyword=call+sign+chaos+learning+to+lead+pdf+free PDF link annotation
    • http://burrrhey.tech/kenneth_martell_autopsy_reportsz9zc.pdfIn PDF document text
    • http://zezasarasojid.mywebcommunity.org/lincoln_weld_pak_hd_liner.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404515/normal_60579a2ac2f28.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/mumorosetugirofet.pdfIn PDF document text
    • http://gugolufixa.mywebcommunity.org/zolofi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368977/normal_5ffc178213b95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390642/normal_601aff26daa15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372378/normal_60259213cdd2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490974/normal_602b733d44886.pdfIn PDF document text
    • http://zenaxudoriw.mypressonline.com/felubo.pdfIn PDF document text
    • http://leludezoz.scienceontheweb.net/mezebamakozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5fe784a7335d5.pdfIn PDF document text
    • http://megidexabaror.mywebcommunity.org/big_data_analytics_wiley_publications.pdfIn PDF document text
    • http://carishr.com/fate_grand_order_jp_guiderpxqc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461777/normal_5fe1247bc9035.pdfIn PDF document text
    • http://guronid.mygamesonline.org/algebraic_equations_examples.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/51a57c08-c9f8-4cbe-aa93-e2e2fbca8a7f/how_to_redeem_roblox_codes_from_gamestop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d198f032-b083-4468-934f-ff883397f606/adler_held_that_exaggerated_physical_deficiencies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e5aef5f-0d2e-49bc-a2f7-176a5683d33e/barukodoxusaketosol.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_off00037959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37959 5320 bytes
SHA-256: f2af68424a39c67191503b520283c7b62140ea72d2e1ccfe3abcd8fecba762fe
font_01_sfnt_off00038b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38B67 14976 bytes
SHA-256: 903ba27809f7d6ed117dad5d9a7d7b2f44714fc7d4e30b8f5096d69edde44ea7

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