Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc59e47115d7c99f…

MALICIOUS

PDF

82.1 KB Created: 2021-01-01 03:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 147acc13316b2a8b623b4a60203d37fb SHA-1: 73fabe7665b1a47353e541846c137cdf0a6fe787 SHA-256: dc59e47115d7c99f8daf3ed56ab253369f923f3b6704234fda19c05e8f14e417
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of the external URI suggests a phishing or social engineering attack.

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://trafftec.ru/strik?utm_term=super+the+hedgehog+adventure+2+chao PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412413/normal_5f93b07d0e39d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486971/normal_5fbe26b029e5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f891261ebb80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452612/normal_5fa51557573ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_5fb02d1c3efd3.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/4sgfqje/6831381694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5fb97a5a765a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472766/normal_5fe4a021591d3.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/divikufifir/79932000047.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b48c0002-b11b-4337-b808-a5e600c279b0/tenusotagijexikupiv.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/artificial_intelligence_markup_language.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/48552330022.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/3010275919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c08fc0-f7ba-4a5b-85f4-5ef1ec42bd0b/62269278912.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/10111303323.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_off0000f791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF791 3224 bytes
SHA-256: 14622080c02a7a950e2d6efb061673a452e6a1c5d068f2b9c18f2f3f10def6d0
font_01_sfnt_off00010313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10313 5420 bytes
SHA-256: d3cda26d922b490d4ffee16a9e6bcf59058f417adab38f300b86a28b2d589885
font_02_sfnt_off00011584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11584 11040 bytes
SHA-256: e893c76200b7778908972e040992676e1c19ad1e39dec1b936e6dff4033d4e15

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