Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4470d56611a7e47…

MALICIOUS

PDF

82.7 KB Created: 2021-03-22 20:21:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b97277ecd2d0c2aec8e91a19ea28ad9d SHA-1: 28794c255779edfe885deb528cb60bdb5a2f85cc SHA-256: d4470d56611a7e47807ac7e5f8253896d0da5da5a506643f3a72471213b5e798
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to malicious content.

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://soxebez.ru/wix?keyword=words+that+start+with+s+to+describe+someone PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366340/normal_5fe1668f87c8a.pdfIn PDF document text
    • https://koberowebajufom.weebly.com/uploads/1/3/4/0/134096943/pokilujonu.pdfIn PDF document text
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/4186502.pdfIn PDF document text
    • https://tizelizenofus.weebly.com/uploads/1/3/0/7/130740364/xotusowogofiza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504839/normal_5ff3d32d05f1f.pdfIn PDF document text
    • https://cdn.sqhk.co/baduvezemu/iihoLYi/maxukazodizonaxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381091/normal_604f3553efea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464724/normal_601e248caf043.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/gTidH4h/43343522716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493282/normal_5fd8fcd02a042.pdfIn PDF document text
    • https://cdn.sqhk.co/pudamunipum/jhiahdj/internet_explorer_7_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414489/normal_600e6d4f3145a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454824/normal_603d1cf454d1e.pdfIn PDF document text
    • https://cdn.sqhk.co/kifavubivelo/crQwyha/fruit_forest_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xadakede/jeu9ib6/glory_road_imdb_parents_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372681/normal_6045faff6df64.pdfIn PDF document text
    • https://cdn.sqhk.co/bipujawojeli/igjexZw/rigotutilegidodixi.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/d8bea0be-88a0-485b-bbb0-d50ff025ea38/58386370935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af4fbf6e-d9d4-477c-8a8f-f75f01de3333/62496353364.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_off0000fab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB6 5180 bytes
SHA-256: 7a20be37ec0493fbb7e0f8cac4e9da588f52b45dd7f083c30b850f010432109c
font_01_sfnt_off00010c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C41 10448 bytes
SHA-256: c53f83591be8f9afedc5e2bcea46912dadf60dda63526a3126ea3f03c9c10821
font_02_sfnt_off00012fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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