Malicious PDF — malware analysis report

Static analysis result for SHA-256 434345bf328586b7…

MALICIOUS

PDF

149.4 KB Created: 2021-03-17 01:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fdbcbab330c30c69341d221bfe88b332 SHA-1: 510c5950a45939dddc75a7b3e7e8a617df71ade9 SHA-256: 434345bf328586b7d19916a123b3c31f5633cd83a4ae9fc4dfcbe82ba7e03780
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 0.9956

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/strik?utm_term=voltaire+candide+l%2527optimisme In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_603c0d922446e.pdfIn PDF document text
    • http://liwumite.iblogger.org/58465263898.pdfIn PDF document text
    • http://nunovoxiwanafuz.getenjoyment.net/learning_english_for_kids_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414342/normal_5fecbcaac6198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498971/normal_5ffea04763589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_60504791bdaf1.pdfIn PDF document text
    • http://dofujifeluradep.medianewsonline.com/dictionary_oxford_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5ff4c1a668308.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/fender_passport_conference_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414864/normal_5fcad8c7736d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446382/normal_5fe4fc65a7995.pdfIn PDF document text
    • http://dadivasim.sportsontheweb.net/water_pollution_introduction_download.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
    • https://s3.amazonaws.com/petubapizo/lowezokovazojovoxoxud.pdfIn PDF document text
    • http://fitewamulifat.epizy.com/bittencourt_penal_volume_3.pdfIn PDF document text
    • http://tafejedukevum.rf.gd/58695636072.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/dizife.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/arifureta_manga_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/khk_bevel_gear_catalog.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/grain_shader_brushes_for_illustrator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/15491155202.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/20721904619.pdfIn PDF document text
    • http://dewifazegukom.epizy.com/yahoo_mail_not_showing_images_on_android.pdfIn PDF document text
    • http://lawazujazigefon.epizy.com/punjabi_gidha_boliyan_mp4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001df18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DF18 5004 bytes
SHA-256: 02cc4620b53a1cb4b0ee33b3b739d3fb064ef4ebec85c5ecdb9a0569067ed827
font_01_sfnt_off0001eff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFF9 16640 bytes
SHA-256: 519e4ba02cc161e088a515059c80379fc2431d8718946f7c36ff126b767016ea
font_02_sfnt_off0002222a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2222A 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off00023757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23757 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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