Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bc57c44b1b2e31…

MALICIOUS

PDF

171.7 KB Created: 2021-06-10 10:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5a2721aa2e3337bf03dbdbdd17210298 SHA-1: 0f6087b384d489c7883adf74eac9cb38ceafc5dc SHA-256: 15bc57c44b1b2e3198e3cf3db6e5b5871c741cd9b22d695dfeb77f6f91b1a3e1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pistant.ru/pbw?utm_term=sword+art+online+war+of+the+underworld+episode+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455178/normal_603d2fa84a7b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_6022156e3bfbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487927/normal_60bce6789c7dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495269/normal_604b231b2530b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494648/normal_604a30226bb04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415322/normal_5fdc0d8aeafe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377674/normal_606dccb15e2f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451941/normal_60568b5eab42f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423700/normal_5fecc1b904e80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499942/normal_5fe9589062d37.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/dc3c6e5a-203d-4b1f-8f40-8506e613c70b/70649348467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39202ff8-31cc-4b4f-ace1-967246bf1432/revenge_of_the_dreamers_3_deluxe_zip_file_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01263ac4-66bf-4b75-8ec7-bd124225f379/43657947245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bed801c1-094e-47a7-ba1a-352ec1908317/61660384105.pdfIn PDF document text
    • http://xibosini.pbworks.com/w/file/fetch/144738384/how_to_win_roulette_game_strategy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f3d7864-d539-44ec-a395-9de46f3a3d02/53245919532.pdfIn PDF document text
    • http://tevimunon.pbworks.com/f/43414863248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c34ae372-9bf4-4fb4-8644-02cabe5531c1/butawaroxom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5783fec5-be95-4908-b46c-1f37c7658422/precisamos_falar_sobre_kevin_livro_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cae8e9b-c7ec-4ff0-80de-cbf6495f5e7e/vafepuvip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444fb661-a7fa-45ce-8d5d-a1e47cc9e082/95569737038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a97ba33-71f9-4810-b1a3-f9b8176a6617/biodigital_human_apk_premium.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_off0001dd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD4F 44792 bytes
SHA-256: e0ec28bfb53d6c61c62849f71495898a63dea1d463b3ff8ee9cb81d6487eb254
font_01_sfnt_off0002664f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2664F 5324 bytes
SHA-256: 57f9682b00d2ca4fc546895b5743664309abad107a3959e253b2b5153866a5b2
font_02_sfnt_off00027873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27873 12144 bytes
SHA-256: e4ce223f6c90f2ef1aa4191b6bc8378eeda783a0acdd740380e64f7486a9f0bf

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