Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9485f498ea1f915…

MALICIOUS

PDF

70.7 KB Created: 2020-12-14 04:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 10a5d3f58ce1cc710199e117dfc1c479 SHA-1: 9cd4064550b8c113b3f641d9e174b95540d15c29 SHA-256: a9485f498ea1f91591916942a07f3df1f84d52eed9e7e097966ac3729d7e7cb9
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-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://traffset.ru/strik?utm_term=jagranjosh+10th+result PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379610/normal_5f9e3f7abe755.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406229/normal_5fcb1487ad95a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5f91834bacfd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3d1f6affbf90a66fcb035/t/5fce42da8a55f2188ba48f9c/1607353051183/how_to_draw_cartoon_eyes_for_beginners.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b9656b97992eb57c9820/t/5fcd0c0beb18547f4b891bc9/1607273484305/valentine_s_day_bingo_sheets.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50b922e537a05ef23ad8d/t/5fcac9df03fa4852543373b2/1607125472182/nova_galaxi_dvr_lathe_for_sale.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf57c8e18c5c478ef31610/1606375369075/the_dark_knight_returns_online.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/bujulijixemubigi.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/doodle_god_blitz_all_combinations_list.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b2678139af037665e521/t/5fc9a0fb856278751755eb68/1607049467559/43224370979.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe03553485235c868bf00d/1606288213758/juremejevogavifusili.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/rspca_sheffield_report.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_off0000d89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89A 5204 bytes
SHA-256: cf41d545639d1bc2dc7c47c37fa4b173568ddb671e507522cd905b98a77db22b
font_01_sfnt_off0000ea50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA50 11032 bytes
SHA-256: 8ebe0b96dfaba8f6d598f814037b6e34bd4b2b266e8b6597a499b790f7eeb78f

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