Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce661376470746af…

MALICIOUS

PDF

89.6 KB Created: 2021-02-18 13:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 13b0895ece2b6f1d66fc054ba25b5f9c SHA-1: 920ce34cdf29a1ec0907f8adaef2d006f408eee0 SHA-256: ce661376470746afecf58bb8043a870fc883740e24def97c66bbbe928d273097
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL and numerous other suspicious URLs suggest the document is designed to redirect users to potentially harmful content, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs points to a common phishing or social engineering attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wb?keyword=us%20history%20regents%20practice PDF link annotation
    • http://kungfumalibu.com/56759993958xhnue.pdfIn PDF document text
    • http://vengriya.space/drums_of_autumn_chapter_13_summary26ibu.pdfIn PDF document text
    • http://sreview.online/partitioning_thousands_hundreds_tens_and_units_worksheetst91gf.pdfIn PDF document text
    • http://cg-designer.xyz/magic_tape_scotch01ofv.pdfIn PDF document text
    • http://migerov.xyz/nccn_guidelines_multiple_myeloma_2015bez58.pdfIn PDF document text
    • http://canonsburglake.com/70847572431c8jjj.pdfIn PDF document text
    • http://nibelv.xyz/3d_basketball_hoop3yup1.pdfIn PDF document text
    • https://cdn.sqhk.co/gutejalajige/5Ppib4L/kogafanetazosejoverixe.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/may_2018_calendar_excel_sheet1kbei.pdfIn PDF document text
    • http://copyright-help-center.com/ladugorutazowibifevanuzilradns.pdfIn PDF document text
    • http://copyrightram.net/cute_love_letters_for_boyfriend_on_his_birthdayy2jlg.pdfIn PDF document text
    • https://cdn.sqhk.co/garisuvonuk/jghigh4/forgot_lock_screen_password_ipad_mini.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
    • https://s3.amazonaws.com/kukupunopedon/tixulosukiguzenolibip.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/61965111276.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/30243652771.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/milady_cosmetology_theory_workbook_answers_chapter_5.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/free_sales_quotation_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/absorcion_y_transporte_de_lipidos.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/outofmemoryerror_at_android._graphics._bitmapfactory._nativedecodestream.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_off000112d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D9 5044 bytes
SHA-256: 96b18e2e8a227f1577278d3501c86c987fa043f713a3f4ae1fbfbea7e2b7a8e9
font_01_sfnt_off000123fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123FD 11832 bytes
SHA-256: 126bb3de3a7c819f092780e1b205a85644e0157a13049c5d5f28cfa242555d75
font_02_sfnt_off00014b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B30 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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