Malicious PDF — malware analysis report

Static analysis result for SHA-256 5686714966d69a29…

MALICIOUS

PDF

69.0 KB Created: 2020-11-18 00:41:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4e348a2210f603d0c7ab77ad150e13c7 SHA-1: 55ccc8810a444c89217e75ca0e2909cbbb66ff97 SHA-256: 5686714966d69a2967283ddda8ae24fabf6a3c8f31dd9c204ca8b8b8b6714dfb
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://trafficel.ru/strik?utm_term=three+little+words+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f8c1329d46ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389793/normal_5f9bce077b452.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5f98a18a2a370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f9347f52331e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388614/normal_5f9376cbaba73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_5f90608b9fee6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421966/normal_5fadf2386facf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375702/normal_5f9a9eee05ca0.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/batoragubukepo/10109043321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153aefd2-23f2-477f-9907-960cdbe3770c/94055444934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3132b24f-d02d-40ac-8a04-e57be34cb351/76188118856.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/calligraphy_cursive_alphabet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1661e226-08e5-43ea-af52-139040c90161/513759972.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/xokufibepumadevuwavabi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12B 4960 bytes
SHA-256: 78c53479124bdc786495b3854a98fb2c82939b9d2217c5a689c5be220301f0b4
font_01_sfnt_off0000e218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE218 10836 bytes
SHA-256: 4b9f9d87996454f2e803ecd81d05d639d24808c0b0f956d82065d1b3bbb26752

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