Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa36bdf8025db6b…

MALICIOUS

PDF

75.0 KB Created: 2021-02-21 03:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1cc03415ab2d10556fb99e9902746310 SHA-1: 538a7b14cf30c78e4777fe0c488e0a4fcec9be76 SHA-256: 9aa36bdf8025db6bb0ee20cb8315e4478ab187e29fef677800420583d2acc1bd
156 Risk Score

Malware Insights

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

The file is a PDF document identified as a credential phishing lure impersonating Netflix. It contains an embedded URI pointing to a malicious domain, which is likely used to redirect the user to a fake login page. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://xazepobuzu.weebly.com/uploads/1/3/4/5/134582826/3852935.pdf.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=roku+activation+link+not+working PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5ffce3db9636b.pdfIn PDF document text
    • https://xazepobuzu.weebly.com/uploads/1/3/4/5/134582826/3852935.pdfIn PDF document text
    • https://momexifolel.weebly.com/uploads/1/3/4/3/134319719/5534925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527859/normal_602864762d417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417814/normal_600e9cddaedc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475197/normal_5ffe4b05c81ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500429/normal_5ff23a727fb55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460461/normal_601aa55f5ff24.pdfIn PDF document text
    • https://parafobosa.weebly.com/uploads/1/3/1/8/131857791/dasenud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456135/normal_601f2704f3c60.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/sabobenuwe/labovadake.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/18994689895.pdfIn PDF document text
    • http://tonuvewogi.rf.gd/logitech_gamepad_f710_treiber_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/3095766544.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_off0000eb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB17 5012 bytes
SHA-256: 4ac52308a02a09cdbb283f547ab40a950da8e2e71b7d3d36598ece43931ec168
font_01_sfnt_off0000fc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC57 10264 bytes
SHA-256: 5c4eaf829278995ebc24f8cd39993373ebe405ac7a13dc194092e4c97a727cee

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