Malicious PDF — malware analysis report

Static analysis result for SHA-256 82bbbe64b6859754…

MALICIOUS

PDF

82.8 KB Created: 2021-05-22 03:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c89f153e1733d48e3f480c95754149de SHA-1: 6af0f7ebc35ec768fb3cbb9f1ca24d4221f9b974 SHA-256: 82bbbe64b6859754ee70460df890bcb93019476454dd0ff31b6eea76f4eaad50
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 0.9997

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://botokaw.ru/strik?utm_term=machine+learning+a+probability+perspective+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456119/normal_5ffefa2394d30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467573/normal_606a74a491f13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455658/normal_6065ab052bcb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478669/normal_601a84dc9426b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fe2d890354b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481539/normal_60121e936c32d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/medscape_aprn_compensation_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/folder_design_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/5_laws_of_attraction_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/wizesutiwoludojizu.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/bc_hunting_guides_and_outfitters.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/aararo_aariraro_song_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/kibikadilun.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/76029383994.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/kadaboxobefopaj.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/57372044405.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/arduino_ideas_for_home.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/new_holland_7308_loader_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/play_store_update_version_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/hypertension_treatment_guidelines_during_pregnancy.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_off0000f8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F9 5512 bytes
SHA-256: 0a8d04096071ebd909f3a48dfdc98c06f642153fc19ee8b31370dcebb008e759
font_01_sfnt_off00010bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAC 10356 bytes
SHA-256: bf1dc0f78a07bf2c6172ed27bae24792f3b0f395e1e42a5385583fa9c965a546
font_02_sfnt_off00012f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F29 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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