Malicious PDF — malware analysis report

Static analysis result for SHA-256 8891824da6fc6f35…

MALICIOUS

PDF

58.3 KB Created: 2020-12-21 23:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 48d485f96ce5344f56a1fc2fa9fa68ae SHA-1: 8c24c499b031bbc9a913d836a97c60adb47d70f4 SHA-256: 8891824da6fc6f3518a557feb1aa4e73b59fef1946aebe4a1adcf6ca3b23268c
152 Risk Score

Malware Insights

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

The PDF file contains a lure for a "coupon code" which, upon clicking, redirects to a known malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded link is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7640

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://ggtraff.ru/strik?utm_term=coupon+code+for+walmart+grocery+app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5fa33ea55c820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f87af8acd9a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446643/normal_5fad22d92d58d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f881ec653931.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b44005-1b30-4761-be94-d64086048d30/1003108018.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/50722125661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2482e1-27b3-4d2c-ac53-159d09fce88b/kibogavifebamepijidig.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/31078564249.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/busimoxugaxawe.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/65193644113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b4b70f5-6685-413b-8017-f87fe318287a/42409278482.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789df6b9-3c00-4bcf-95ee-c959d4e57a6c/katopiligadaxidivupubuwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dde4403f5353fd9590af/t/5fc22817cb3e0f577198b320/1606559768635/dofireserafexerajetosot.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2c3cb0b7d26d496ab432/t/5fddee6f2629b066aba83f0a/1608380016188/cochlear_baha_5_user_guide.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_off0000b0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0EA 5348 bytes
SHA-256: 9593a7dead95b4f45249129fe9e78c2d7324071927e49e0518a767c5add4ad4c
font_01_sfnt_off0000c31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC31D 10324 bytes
SHA-256: 5816032e9193a03c90d33d8750fbb42c6f05204a6130c0f592e3da504764e173

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