Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d30f86985da04b…

MALICIOUS

PDF

77.3 KB Created: 2021-02-26 19:10:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a05626b6fb3af5dba5dd9a8ae4aef852 SHA-1: b8a30ba91cec33e1973e45c3f9c98d7b3f84ce37 SHA-256: 18d30f86985da04bbbbbf615a0ead4e88e78ac51f52d0c56c8223f0ab9a3366b
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://xajibur.ru/wix?keyword=rca+home+theater+system+1000+watts PDF link annotation
    • https://cdn.sqhk.co/mevexobuzur/ghFe7BM/28234391495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_60192cdca3616.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5ff400e298284.pdfIn PDF document text
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/7287676.pdfIn PDF document text
    • http://eurostore.info/8190304217645e3i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_5fc83e7f05711.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418383/normal_5fef122a608d0.pdfIn PDF document text
    • https://cdn.sqhk.co/moxufupog/iKBR8DW/xogodanowiliju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_6032f7db4d7b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412387/normal_5fe3c09b2f61c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_600c44014d4c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497093/normal_602af4e3d8b9e.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE562 5036 bytes
SHA-256: 3755e7dd7c9770a2da335e930019c35075cd5aea4aa26fbf4e948b6daa4bdf3d
font_01_sfnt_off0000f68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68D 10600 bytes
SHA-256: 94fa5a12b2e69365a1f186ced695364930322014ac4a2e6c795250a67b434fc4
font_02_sfnt_off00011a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A93 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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