Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c54ed2d4d7f568…

MALICIOUS

PDF

68.0 KB Created: 2021-06-01 08:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 821a0875624d4c14b81ddc5127f837d5 SHA-1: dcc92235d74d93ee8dc8abc50f2341609223d31e SHA-256: e8c54ed2d4d7f568485d706049e07fd3c5249676753d1f53803a090fe54dc76a
94 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to 'crysiq.ru', which is flagged as suspicious and likely part of a phishing or malware distribution scheme. ClamAV detection and ML classification further indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8294

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crysiq.ru/pbw?utm_term=taboo+card+game+app
    • https://static.s123-cdn-static.com/uploads/4368240/normal_5ff51c040ea3d.pdf
    • https://wozaxopuvomu.weebly.com/uploads/1/3/0/7/130740129/91743b26c2a3a14.pdf
    • https://static.s123-cdn-static.com/uploads/4412887/normal_5fcff588041c8.pdf
    • https://sinezotuze.weebly.com/uploads/1/3/0/9/130969777/suruveza-pusegebu-dewib-gizetokulesepo.pdf
    • https://cdn-cms.f-static.net/uploads/4409411/normal_6028e3192dcda.pdf
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5fdc103723ac8.pdf
    • https://woxoxoba.weebly.com/uploads/1/3/4/8/134893248/jefefosugikiwiwemuf.pdf
    • https://nirusiji.weebly.com/uploads/1/3/1/4/131407521/2261368.pdf
    • https://static.s123-cdn-static.com/uploads/4386621/normal_5ff5901ff3559.pdf
    • https://tulopudegiwidal.weebly.com/uploads/1/3/0/7/130739196/gudiresezapasopija.pdf
    • https://cdn-cms.f-static.net/uploads/4393763/normal_604ed8b341f8e.pdf
    • https://ranusufepabef.weebly.com/uploads/1/3/4/2/134235365/nibizu.pdf
    • https://gatilavim.weebly.com/uploads/1/3/4/3/134391542/wepebefemoma-kogogogofaw-lopatal.pdf
    • https://static.s123-cdn-static.com/uploads/4389821/normal_5ff6530e94ebc.pdf
    • https://static.s123-cdn-static.com/uploads/4417306/normal_5fe3b65c374ff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a7f64ad6-bbe2-4523-9fb6-63ff07682497/yamaha_motif_xf8_for_sale_in_south_africa.pdf
    • https://uploads.strikinglycdn.com/files/ea40e4b5-d0d7-4309-b27b-e0eabb1c4c1b/62321550043.pdf
    • http://palixazoke.pbworks.com/w/file/fetch/144416181/cover_letter_for_job_vacancy_examples.pdf
    • http://dimutojopog.pbworks.com/f/39068595807.pdf
    • https://uploads.strikinglycdn.com/files/201f70f3-5123-431c-a90c-26398d812199/sobowuximodipek.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3fb.bin
12b7d6ecf8417a7d1e9da88ff6169f1fa9f569d2a389685b062ea6c6e1ea2219		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FB 4824 bytes

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