Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee8b9347b5cb759…

MALICIOUS

PDF

207.1 KB Created: 2021-04-29 12:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 29a260a18943df765192361a45e74598 SHA-1: 886e4f8408e767bbf8f892a30400ed17c529c044 SHA-256: fee8b9347b5cb75967b3b4f8bc2ab993c5d7377e1a72775f21f9856d80e78076
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://resalured.ru/strik?utm_term=libro+de+geografia+4+grado+pag+128+y+129 PDF link annotation
    • http://goworudubilit.iblogger.org/fatelonaxilorepanikubag.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/warelikiv.pdfIn PDF document text
    • http://nutepos.iblogger.org/dokesamowewujak.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/dewazewokib/bogijidesexigafu.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/jikiwizadakunovuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/56466590840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e1a0e98-8eff-41b5-9d63-9d065b3cf46c/xujeku.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/blackberry_desktop_software_6._0.pdfIn PDF document text
    • http://sitejaxikezo.epizy.com/chabot_college_assessment_test_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/81630000241.pdfIn PDF document text
    • http://gusalixofunek.epizy.com/euphoria_movie_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/19670262598.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee3ff092-f4ff-4c83-9559-72d1f67229c4/data_structures_and_algorithmic_thinking_with_python_narasimha_karumanchi_download.pdfIn PDF document text
    • http://vufobaratoja.epizy.com/61863851001.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/the_rhythm_guitar_workout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/247d0da2-b7b5-4798-a3c3-5bacbb1f3d9c/plantar_fasciitis_stretches_for_arch_pain.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/20372836517.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_off0002e0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0B8 5404 bytes
SHA-256: 6da8a9ba72444dae1341c6354bae76d933837b4af477d208d8262c803e7b1e54
font_01_sfnt_off0002f336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F336 13704 bytes
SHA-256: f9583c832fe4e2c54790dc0860de4d864313e0075845d180d2d4263ea96ffb12
font_02_sfnt_off00031dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DBE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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