Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba630ee2fd763586…

MALICIOUS

PDF

72.2 KB Created: 2021-02-23 16:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d1725efc2139e29f834d626a8cbbe4bd SHA-1: 3bcce3ca793dbff099a2a9fb14a4cb6d76cf6506 SHA-256: ba630ee2fd76358663cc62415f12625941e7a61ac164bbd09db12c5d80999335
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://seumenha.ru/123?utm_term=why+does+a+refrigerator+stop+cooling PDF link annotation
    • https://cdn.sqhk.co/visukodo/ifPu9gf/65767401059.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421058/normal_5fede8d38ef92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446490/normal_5fde8e2e6be3b.pdfIn PDF document text
    • http://trysoda.pro/vojoworso7dk.pdfIn PDF document text
    • https://batapasupo.weebly.com/uploads/1/3/1/4/131482803/7498633.pdfIn PDF document text
    • https://miniroworopan.weebly.com/uploads/1/3/4/4/134444940/5990997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_6026e2d49d6a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5fda034d50778.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456685/normal_60091763b6011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459163/normal_602092641fd96.pdfIn PDF document text
    • https://cdn.sqhk.co/jalafimimodo/jcjchbT/68501800209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393186/normal_5fd8300685706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453342/normal_5fd9de7bd978c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496824/normal_5ff513c2de60f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470977/normal_6020d29e2a308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478923/normal_6023e09563ffa.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_off0000db3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3B 5532 bytes
SHA-256: b9ae25cb81d32fdeb6a446f2d34a49b9335a1789794b155ca7c67ceb88c3af2b
font_01_sfnt_off0000ee22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE22 11076 bytes
SHA-256: 180163793bbb270c6738e02e4313d1dcb4de9ab040394becfdd0656b4b74ef45

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