Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f345d9f62a20f9e…

MALICIOUS

PDF

75.8 KB Created: 2021-02-24 06:21:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8000f0c205f3950fe27eb11feeee388b SHA-1: 9523713eadce1bac705fee5bca3adc86eca9b0ac SHA-256: 6f345d9f62a20f9e930f6949588016977551a8ee012ec1170628e3fbc07b9f9a
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/strik?utm_term=kenmore+coldspot+model+106+ice+maker+not+working In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407789/normal_5fe9d33e962ca.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/hjjdMlY/pujugizesokezavoboxoxif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404969/normal_5fc69373706cb.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/hiojd9b/drum_set_electronic_roland.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392661/normal_5fed81af88a3b.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/c4bgjgj/xiwojabekir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/remavuj/atom_bomb_baby_the_five_stars.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/family_tree_template_word_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/daxasarukaviwudisuda.pdfIn PDF document text
    • http://moferamobonar.epizy.com/30932573403.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/nuwogiminixepogorelepafub.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/4776190085.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/esl_worksheets_about_hobbies.pdfIn PDF document text
    • http://rojiferavu.epizy.com/sopusinewuvubasugilotuf.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/full_year_calendar_2019_template.pdfIn PDF document text
    • http://zolatororulukod.epizy.com/minecraft_anvil_crafting_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E5 5868 bytes
SHA-256: 1d9e21e886ff070f2097030b0909d9718a2a42124e1fc52578d55b0ea96cf548
font_01_sfnt_off0000fcdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDF 10928 bytes
SHA-256: 733847d49fabc4683d27dca762ccb2f9ae7839737f6723e9694a83e4bf84de70

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