Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ed510212c55fe0…

MALICIOUS

PDF

73.8 KB Created: 2021-02-16 10:09:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7c5929ada7f889bd1f366e3c99ee4686 SHA-1: 4f10f8013f677bcc1ce1fb29a2b446ce13eef6d7 SHA-256: e7ed510212c55fe0cc3955adf653991f20e59e82203d5f2bcf549f114deb160e
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=maplelegends+quest+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4479906/normal_5ff09ea9145e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_5fd63c7436b86.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/jiPviin/nuclear_strike_bomber_hack_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427514/normal_601c7102adcfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_60200b5a22cc9.pdfIn PDF document text
    • https://cdn.sqhk.co/mejofiwog/gdNjbie/48051634567.pdfIn PDF document text
    • http://sarepoxorak.22web.org/11451729412.pdfIn PDF document text
    • http://mamunetosi.iblogger.org/free_website_template_admin_panel.pdfIn PDF document text
    • http://purigoguwoz.22web.org/sezojuwom.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://dipijiz.epizy.com/research_paper_writing_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/appserv_2._5._10.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/88961410250.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/curved_bottom_navigation_view_android_github.pdfIn PDF document text
    • http://fokogijisigife.epizy.com/que_es_analfabetismo_digital_en_informatica.pdfIn PDF document text
    • http://momodew.epizy.com/732586768.pdfIn PDF document text
    • http://todugiremo.epizy.com/sebi_guidelines_on_ipo_allotment_process.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/powurevimixinoburepazos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d71e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71E 4932 bytes
SHA-256: 2603431c0ae52a3e6bfbd05302342e916a1a2ae1cc4a3f042d7b806e9714ab47
font_01_sfnt_off0000e7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EA 10672 bytes
SHA-256: 404cfc4c2ff4e6cc863f65e9577fcb7c45d6c4557152e5d126a48e30476a2da4
font_02_sfnt_off00010c38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C38 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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