Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc3d26a9850e6bc…

MALICIOUS

PDF

76.7 KB Created: 2021-04-06 14:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 781638936c4795dc8d5e6e50afa018db SHA-1: 116800e44408e317761877b4aff2c7501ca18f42 SHA-256: bcc3d26a9850e6bc71780a2772d315f5c28a929f35d7906e4a5895d144d82ca9
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 0.9997

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://xajibur.ru/123?utm_term=best+answers+for+appraisal+questions PDF link annotation
    • https://jugukibe.weebly.com/uploads/1/3/0/7/130740256/6757902.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_6005f20fd09fb.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/f9236fd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446388/normal_5fd1e4a472f55.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/jAhcVrN/lokakigixitixisetojuweri.pdfIn PDF document text
    • https://ninefajesazaga.weebly.com/uploads/1/3/5/3/135384029/babipolozu-ratilujavo-jevepavoz-fasuwogovuri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457272/normal_602c23456f7f3.pdfIn PDF document text
    • https://tokomekenipejo.weebly.com/uploads/1/3/4/4/134441443/50b124f.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/0idjfgh/5._4_maths_fs_initial_assessment_answers.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/musokejixami/bole_chudiyan_mp4_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/hp_probook_6550b_drivers_for_windows_7_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db8870b5-fa0e-45ca-af1d-cee0c096c5fe/saxon_math_4th_grade_textbook_online.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/zabizuririt.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/baror.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/surenebima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f52db8-c2f6-41a8-b5a7-6b459bc8a8ab/robokananidoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63ac214b-1b66-4183-bebe-d909c991fb26/39339788915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0233743-91c7-4348-bdfc-4a9cd494a734/deadpool_comic_book_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/asma_menurut_gina.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/summer_reading_book_report_template.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_off0000eeb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB0 5164 bytes
SHA-256: 303aadeb597cad0f6222f63f23e513802a21cf19ef00a58d529d03db352c54ce
font_01_sfnt_off0001006a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006A 10496 bytes
SHA-256: f5312eb2c044740502ad944d3f82c1efb48006251f8d57d45efd7e27742cdeca

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