Malicious PDF — malware analysis report

Static analysis result for SHA-256 289727b6d1b998a6…

MALICIOUS

PDF

68.6 KB Created: 2020-12-19 22:15:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f240a21ab04e01cf2125e0a08685a11d SHA-1: 87a2228f87c7e631428cce04cce56c2ac1483340 SHA-256: 289727b6d1b998a698e078107d65eb3d378c98713e3e81a4a09a1192445e24db
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting a malicious site.

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=birthday+reminder+bot+discord PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403276/normal_5fc90351585dc.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/rorebidesaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465702/normal_5fb750f003e35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_5f9256ea0f61d.pdfIn PDF document text
    • https://sufifova.weebly.com/uploads/1/3/4/7/134736026/ce27f.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/697b59d1-bee6-428a-a0e2-06d120b2cfcf/13755056670.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/luvagazikogizin.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/25060929497.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd02b6dae50a01458813d1/1606222520018/91860482914.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/income_guidelines_for_wic_in_indiana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db4cbde-e0e9-457c-89d2-a2562a23d3e5/lonovalitilobemase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ecf1f99-84c4-4d6c-8aab-0294e25039a1/mariage_traditionnel_betsimisaraka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f22ee5c7695ca99bddc9/t/5fc383ac2dd96f59185b2297/1606648750009/pobixolin.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_off0000c235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC235 5436 bytes
SHA-256: be7307b5bd09858874e876621219f81e7a48e97b9b82063b6578413c056ec009
font_01_sfnt_off0000d483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD483 2744 bytes
SHA-256: c58734b7c43f876d00250fe79027c28030c899bcb97b97a165465ed91b27eb93
font_02_sfnt_off0000e02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE02D 10924 bytes
SHA-256: 5cd393329e44a2efdb5b9bd216b933b9d940dacdf85bd9d6c4f31c6f34bb8762

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