Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a6699949ee5e378…

MALICIOUS

PDF

72.8 KB Created: 2020-11-11 20:34:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0c3ba12d219c48296b753c37f73eb06e SHA-1: dd5e10ad6c37fdc9d357c21d3d009c350a8ed7eb SHA-256: 5a6699949ee5e3782018b417ce3919f86f4946fe8d708d2f668a041f0cd94b92
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/aws?utm_term=ordering+decimals+on+a+number+line+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408879/normal_5fa5f1cf9d5ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444623/normal_5fa0e0453ecd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393020/normal_5f9eca85d7844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392877/normal_5f9ff51bd6e94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481662/normal_5fa9b2c71e523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413111/normal_5fa2897c52f50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387586/normal_5f991023d6efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_5fa180cf1f991.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/662c89fe-637f-47e3-8bad-f0d119df1759/73912499652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac9d6fa-ba43-4862-93a5-1baa23d9606a/73350455603.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/wasabi_deviled_eggs_keto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f21fefe-be13-43e1-af50-dffe1d6935ed/rodetasidud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8bb54ae-bbe2-4b23-be22-ef87f2f27da1/84680625664.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4390d68a-b305-4c96-a367-1dadd32aa7ec/ching_and_chong_up_in_smoke_full_movie_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80504cab-ceda-4aeb-adda-f6af0c4ef04e/76067971531.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C1 5676 bytes
SHA-256: 27334e20f2807e879c2520f67ec6a46f75136dd9741d1524d944c30f3b943744
font_01_sfnt_off0000dcef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEF 10368 bytes
SHA-256: ef9184eba6fe2a92fa5f512260914e42e533da163cc9a0e6f75f611cfc6a059e
font_02_sfnt_off000100a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A9 16092 bytes
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67

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