Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c2ab6725de2a5f…

MALICIOUS

PDF

76.6 KB Created: 2020-10-25 18:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 97c05c65db7badcbfae4385140a47611 SHA-1: 3d3d9061035991195172646c62e7b8cf3b3ecb39 SHA-256: d2c2ab6725de2a5f697e2335845821f52cbe771753a5963ab1104d430e2e8d5d
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, https://ttraff.club/, which is disguised with keywords related to 'Naruto shippuden'. This suggests a phishing or malware distribution attempt. Although no scripts were extracted, the presence of the malicious URL and the ML classifier's high confidence indicate a malicious intent. The document body itself is heavily obfuscated but contains the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.club/123?keyword=naruto+shippuden+watch+guide+no+filler In PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/5832748.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/9276785.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/e5a04bffd21a65.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/zekawalefike.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/7484368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f8aabd6004ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404741/normal_5f959c79a2a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f8b27ff8608b.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/xojuwiwezekifilizeba.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/wumiwoje-tiname-gawapavovokades-diwasilejokiw.pdfIn PDF document text
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/7ea3d87fecdff.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/henghuili-files/6634848264.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/vofafigibajujaseluxi.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/waxasidekonufagip.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/tujefuku.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/21451903369.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/casos_practicos_de_auditoria_financiera_resueltos_peru.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/poliarteritis_nodosa_infantil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2304df36-333a-406f-b2b7-3e7950bca1cc/petubokipulelizetopukimop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd8e41c-2117-4e31-989a-9647ef95688d/59751699777.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_off0000e4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A6 5476 bytes
SHA-256: b0b7a3b7c4ef0396ba7c9d0e2848102aea5a42c24645cd160e0fcb816f8fcff1
font_01_sfnt_off0000f75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75A 13456 bytes
SHA-256: 874b7c4ff0422a3f3ccb418a104f979d30f4fe80befedeba561dc08d55151725

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