Malicious PDF — malware analysis report

Static analysis result for SHA-256 30c3afe4e9df4dc4…

MALICIOUS

PDF

74.9 KB Created: 2021-05-29 12:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 14b1cd0c8f86011c6e5218ef716ef92d SHA-1: 9a3751953a0a0b346f58ed94645338411e5f39a7 SHA-256: 30c3afe4e9df4dc4b86a5fc9fb0eb9daefff803d69d699e0463686680c8672ce
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 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=karek%25C3%25B6k+yay%25C4%25B1nlar%25C4%25B1+matematik+s%25C4%25B1f%25C4%25B1r+tyt-dgs-kpss-ales+pdf+indir PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449187/normal_6038c41728c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387933/normal_6064dc8f7d344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394068/normal_6063707eedc1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_604cbc1d62260.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413842/normal_5fec8cf66350f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_6057c0262d389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474723/normal_601dad88ae2f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f94385cc-1821-4246-8323-668b30575105/take_the_stairs_day_2021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5ba6f5e-2aed-4385-bdb4-79663d17482b/how_to_bind_the_strongman_in_spiritual_warfare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/170c7f88-9a7f-440c-9dd9-e7d1328b1c8d/sword_art_online_progressive_movie_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e88efa30-3d12-4cf8-b7b0-b1c8a57083fc/naluputizamet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c10a676f-2f55-40d4-ada1-bc88fb0b6976/what_are_the_interview_questions_for_hr_assistant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa3e71d5-7dc7-4990-b2e4-dc845328dd4d/tageweruwokuli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39c7f6e7-59b0-4b3f-9686-de2de4f236f0/vusadubigudesaput.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cbc6a32-1d02-4394-b5c2-d40132c81ae5/48026031387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2986bb5f-ee7e-43fa-9842-c23298198243/ti_84_plus_ce_games_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c2d9d37-6c05-478c-91a7-93f787803f0e/how_to_replace_drive_chain_on_craftsman_snowblower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93203835-7272-4b2b-bf98-518788048125/how_to_change_point_slope_to_slope_intercept_form_with_fractions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82b5f63-ceb2-4a5a-8bfb-a8e6e85d9987/tipos_de_comunicacin_humana_masiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7e7f98-c45a-4739-9897-5d4a5e896cdf/94303586389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04eaeb76-9e64-47d3-9926-6b6c28e0012b/bafedesosuwumopew.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_off0000e158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE158 5700 bytes
SHA-256: 079a011aa1afd89fc7cb75848ea983b84ee408ef1af74196d9b6667686a66e8e
font_01_sfnt_off0000f47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47E 12660 bytes
SHA-256: 7e8838eea44c3c47f3fb336fa38149ad5ea8479b3c49ab36284cff654aa3e8e1

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