Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb6ec24abf98a10…

MALICIOUS

PDF

69.5 KB Created: 2021-02-26 02:37:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 36f297fab6045394e474f00c7383f7f3 SHA-1: 305e5924b64dac71dadb65e98d599219cd08afe0 SHA-256: 1fb6ec24abf98a10cf8e83f79e32b5ef0437aca52951563c5e71dcedd274a573
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged the document as malicious with high confidence. The document body, though heavily obfuscated, appears to be a lure related to a 'Skyrc imax b6 mini manual', suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9662

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=skyrc+imax+b6+mini+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382192/normal_6014332f4910d.pdfIn PDF document text
    • https://laforefuje.weebly.com/uploads/1/3/5/3/135333455/12a95dc6bde.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/4091329.pdfIn PDF document text
    • https://xilapisozigiv.weebly.com/uploads/1/3/4/3/134341565/2884489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_602d2f66ce8bd.pdfIn PDF document text
    • https://fodibiwowi.weebly.com/uploads/1/3/4/4/134479135/moreruxowajenulu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462980/normal_5feb80eeb4ece.pdfIn PDF document text
    • https://retorize.weebly.com/uploads/1/3/0/9/130969817/govotufetopisilajim.pdfIn PDF document text
    • https://zujetopefij.weebly.com/uploads/1/3/4/7/134766602/gebavogo_fipetuporudov.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/tasikifitimubupaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://basezilevuwegiz.epizy.com/tesla_model_3_extended_range_miles.pdfIn PDF document text
    • http://juruzimezez.rf.gd/are_smart_scales_dangerous.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/how_much_does_a_scientist_earn_uk.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/best_books_by_brandon_sanderson.pdfIn PDF document text
    • http://likijanima.epizy.com/baby_games_free_online.pdfIn PDF document text
    • http://jufakoxageponuz.rf.gd/centrelink_form_mod_pc_private_company.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/probability_math_for_gre.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/gimaderaxazofi.pdfIn PDF document text
    • http://pobepogimivej.rf.gd/bolingbrook_police_annual_report.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 5400 bytes
SHA-256: 40ce34ae52396801064a7afae0500abd482f9251df3b94b154e80d9c74ba4225

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