Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8230d6f5bae854…

MALICIOUS

PDF

71.8 KB Created: 2020-11-30 05:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c0778a1f1be28d10d7e494726df34287 SHA-1: 6d8140b9d3184a73b4f5b25a8376391b2d320458 SHA-256: 4b8230d6f5bae85412a4d35480545db012c864d52cbad4860b8544d95ee60605
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 0.9998

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://traffking.ru/123?utm_term=4+heroes+of+palmyna PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449009/normal_5fc0cd817fb42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383913/normal_5f9dd5ab6a3c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f8ea4c54b5c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376600/normal_5fb614bbe075e.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/sabegokek/dave_escamilla_band.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/94576653174.pdfIn PDF document text
    • https://s3.amazonaws.com/pamavon/lurogokavejosug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78757e9d-a135-4bc2-ba57-9fcc60ad90a2/boribimorexofotimogaza.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/tamil_catholic_bible_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/32544013180.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/85033655290.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fb10260-f273-4e5f-a545-b55c25f8566f/traditional_format_income_statement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fba7e219-e7fb-4db3-8247-39cfac4d0bda/northstar_2_listening_and_speaking_5th_edition.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d04b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04B 4896 bytes
SHA-256: 9784a19122789b37af897dc6ef2b3505db52d92235303d26981a2f2b140e97ee
font_01_sfnt_off0000e0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C1 10472 bytes
SHA-256: c9cb6a5fb24677a1a3d272ebfe6e8fcbf22f8b4e1ec828ee22adf68678d70e79
font_02_sfnt_off000104a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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