Malicious PDF — malware analysis report

Static analysis result for SHA-256 f724755ec3fd9133…

MALICIOUS

PDF

90.8 KB Created: 2021-02-28 04:08:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 96445ea6435d69750b5ff14c12dafb02 SHA-1: fcb4d527b0b07a5bbb8ff16c933a4ccd4e371f98 SHA-256: f724755ec3fd91333618bc518034284a9e85fc78ab1e91fa0d0fb10964d1e943
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into visiting a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI suggest a phishing lure.

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://soxebez.ru/aws?utm_term=are+jeeps+wranglers+reliable PDF link annotation
    • http://artelamp.store/cetusplay_tv_remote_apkk2ir2.pdfIn PDF document text
    • https://cdn.sqhk.co/kajemuwasutu/ghZjhih/40197658504.pdfIn PDF document text
    • http://detonic-de.website/how_to_recovery_addictionnxnhu.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/hiahhUA/project_plan_software_free_download.pdfIn PDF document text
    • http://baranaydin.org/152249016239h3kd.pdfIn PDF document text
    • https://cdn.sqhk.co/jawafurovif/idahfih/mma_pankration_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://purumurik.epizy.com/what_chemicals_to_use_in_coleman_spa.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/lunavelikovidezukaremi.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/lexubometaso.pdfIn PDF document text
    • http://vumazudu.rf.gd/78157949341.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/les_accents_en_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/avastin_medication_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/facebook_app_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/digestive_system_free_worksheets_for_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/difference_between_sqlite_and_mysql_in_android.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11956 4880 bytes
SHA-256: c9caa5c24d75b0f0ef708c35b8afbb0c2187d695ca29c6a19bb2e6707310dded
font_01_sfnt_off000129f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129F9 11356 bytes
SHA-256: d99a8984c4b1ba256feb118c85f32b8e2679ad7d4d5c3ca9062f2d20deba0a15
font_02_sfnt_off00015052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15052 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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