Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c8dab59ea3278a…

MALICIOUS

PDF

82.8 KB Created: 2020-11-13 05:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 07edeae4b8cc171de33e640ef7585a1d SHA-1: 13f8955820996f240cf10bfc41bc63ced8b53eef SHA-256: 12c8dab59ea3278ae0bee3804de0903ece3d9ec5b31e2511440b6b8a6a979184
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, appears to reference 'Sandia casino hotel deals', suggesting a lure for phishing or scamming. ClamAV also detected this file as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/123?utm_term=sandia+casino+hotel+deals PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402533/normal_5fa30fa76df04.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://uploads.strikinglycdn.com/files/5e88f03b-22ce-456d-a598-57c9240ad28c/279940698.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/gezexuvevuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57099e92-ac4d-4ba2-b674-0089c63bb7e4/98776023348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6dbb3cf-9126-4018-a361-9f34a9d79dee/daffynition_decoder_worksheet_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/audi_a4_2017_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb8ee251-fe17-497c-95a4-a13465f21ce6/english_in_albania.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/tusej.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/47101545509.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/nixixokesutujidagewari.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/27943840140.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/free_fishbone_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/harry_potter_series_in_order_wiki.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_off0000fba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA3 4824 bytes
SHA-256: 703095a3865bf11ad7b251e123ebaaf20c9c935928e006a34f877750c25dcb77
font_01_sfnt_off00010bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEC 10640 bytes
SHA-256: c54c62a346f60e0be52c7d739cd946541b4580395a3472cb8a068d4ce97d4450
font_02_sfnt_off00013016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13016 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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