Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a7ee326ded469a…

MALICIOUS

PDF

79.2 KB Created: 2021-02-14 19:03:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c461d8ea5f5769ecb6798a79b81a2d51 SHA-1: de68f5533bbab8054e0abb835d4ff9064ce87455 SHA-256: c6a7ee326ded469a5213eb05eab98aea82e52c6b0f841b6596c3685d9d41672d
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 website offering a free book, a common lure 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 it's designed to redirect users to a malicious resource.

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://druttle.ru/123?utm_term=el+poder+del+autoestima+libro+gratis PDF link annotation
    • https://cdn.sqhk.co/posogamumut/higDOjc/kuzizewugikerixad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500904/normal_5ff3f462a9469.pdfIn PDF document text
    • https://cdn.sqhk.co/moranunemuk/heja1df/best_ringtone_galaxy_s10.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/fjegdSs/sprout_social_social_media_calendar.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/ibE8gce/91341746078.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415782/normal_5fe500752e47b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_5fd8591a8c142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481065/normal_60192c4214a3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379387/normal_5ff77ff21b101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411493/normal_5ff1c13047d60.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/khfhihh/88443030959.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/jezpihW/69591498489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480878/normal_5fd95b0012b65.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/xukirizugukugi/rezawuremuwugemome.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/dofixepiwiregexotonujovi.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_off0000ecf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF4 5376 bytes
SHA-256: a152aa2781a10e9c297f2398394dd17d044431ba0c3abaf7f7e97a09482426d9
font_01_sfnt_off0000ff17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF17 1596 bytes
SHA-256: 1ca19e58de121a7afe266b3a1fd7625653a603008b535b21c8d9c7e0093fc485
font_02_sfnt_off00010739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10739 11768 bytes
SHA-256: d1dd5cb3e53a5d934cfcf577667e4db42df735ca9897c5c7400dd049bc1da453

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