Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf27bc8c6e1c4834…

MALICIOUS

PDF

65.6 KB Created: 2021-02-24 05:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 286cd6df799b2d8269bc6ac442674721 SHA-1: 24f41d313df11a7858b3040087bc528dfd30e0f2 SHA-256: cf27bc8c6e1c483415207f6c4b21d0dcda96d362e9c60a52568a15324b5a78bc
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and a machine learning classifier. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or malware delivery attempt. The presence of an external URI and the overall detection by security tools indicate a malicious intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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
  • 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://bologen.ru/wix?keyword=wwe+hell+in+a+cell+toy+ring PDF link annotation
    • http://heretythere.site/fawideledapusetipoldcsb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470221/normal_5ff5c4821e6d8.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/989328747332l41w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475859/normal_601baac9b7380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417662/normal_5fdb04147e58b.pdfIn PDF document text
    • http://registrat.space/176077064661typ8.pdfIn PDF document text
    • http://dom-bita.org/vocaloid_4_full_crackry32v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501501/normal_6021711eec68d.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/gurupixabogivaz/guzifakijig.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/dasomulusiteligaxuz.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/47340360066.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/photo_booth_frame_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/valkyrie_profile_2_silmeria_skills_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/mindful_eating_guided_meditation_script.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/xofevuxuzurozakejaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/candy_crush_saga_hack_apk_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/bootstrap_contact_form_templates.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_off0000c4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E3 5092 bytes
SHA-256: 9bc1641db941b3a0f52bbf699b4d174ed2cea7f4b5f0541d9ebff33f2c54b3c1
font_01_sfnt_off0000d64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64D 10252 bytes
SHA-256: dcad170ceb18e7faa2f51417099c48f1f1b0b0a7fb343b1cd67f3865241a7e83

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