Malicious PDF — malware analysis report

Static analysis result for SHA-256 97668a751e2a9ecb…

MALICIOUS

PDF

68.6 KB Created: 2020-12-17 03:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ef10f1e8a17b557043338c7039ba68f8 SHA-1: d3af6e34895b71e26a9ec5e7363004395913332b SHA-256: 97668a751e2a9ecb16bf9ad2f879c1fb54d52c94c29424381117bcf974d3384d
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://trafftec.ru/123?utm_term=1000+most+common+english+phrases+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492871/normal_5fb3a62ec24ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470833/normal_5fce2ac9a9aa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406516/normal_5fa206a53810f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_5f8c0d88a6ce6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453747/normal_5fa5adc75463c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451949/normal_5fc7a8b0662ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f939eb0204c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489414/normal_5fbb17c92ee29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502268/normal_5fb2ad67b2806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479224/normal_5fd1733a54558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_5f8de8bf000bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445337/normal_5fb4987e29b57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_5f96c6ecbcb91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_5f9a344358f2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455399/normal_5fa3cafc9af18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378605/normal_5f97c15a82db7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10C 5760 bytes
SHA-256: 853a511c013c4a33594ece9e321b705614f854b0e033524a39d415b15a672adf
font_01_sfnt_off0000e48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48C 9752 bytes
SHA-256: ef90b77905a49e9b4a239c38f1b23ee0c06061b7b12b9ff7b36a9eae1270926b

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