Malicious PDF — malware analysis report

Static analysis result for SHA-256 66d744e7692ea146…

MALICIOUS

PDF

56.6 KB Created: 2020-12-21 06:35:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4a75b2c804197d783bc395894c7e4868 SHA-1: 309dc7c84ca0ab0d46558718f0d98dc4e3cb81f5 SHA-256: 66d744e7692ea1461e3e2f07ad80b46b8010c7cd4d79031b0a175f227727ce42
152 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URL, 'https://gettraff.ru/strik?utm_term=sonic+the+hedgehog+characters+toys', is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9423

Heuristics 3

  • 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.
  • 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://gettraff.ru/strik?utm_term=sonic+the+hedgehog+characters+toys In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374188/normal_5f8f51e39ddee.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/3999753.pdfIn PDF document text
    • https://xebivonejawaf.weebly.com/uploads/1/3/4/0/134096192/0c2d1dc7dd63fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f87a87337036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5fad66d075cd2.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/woxorojero/49080054989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd2e73e-899c-4d12-98df-10faa8660d55/land_and_water_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5412c27-1174-40cb-8295-01fb0cad2113/wait_for_me_reprise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c355b9b-f2de-4892-8f9d-767ba23583ea/15013987511.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/cdtfa_230_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd45c3eb685147a09c264a/t/5fdde566d85ca26442f26196/1608377703546/cinestyle_lut_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22cb5ae3-6814-4fff-9bc2-0821b327661f/41194752572.pdfIn 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_off0000c7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F8 5164 bytes
SHA-256: cdbc4fc9412b7d3ff7f7d7a48d5dbd0b35a9f4376cbb3cea4ee0d87b00967507
font_01_sfnt_off0000d964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD964 2012 bytes
SHA-256: 0df9832cfc5af80b801f03965aa32ffa143350b02011ec55e095d3f91a351c64

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