Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd552573058ebd03…

MALICIOUS

PDF

72.5 KB Created: 2021-01-20 08:45:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6ae0d26b320d4fadecdd44939637b9d4 SHA-1: 15d3bc6deaf901c6dd41000328fdd8121d035fbd SHA-256: cd552573058ebd03f5431d013367f220078b010ebb362665eff1ea99f9daa030
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that mimics a search result, likely intended to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI suggest it's designed to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wb?keyword=off%20road%20military%20vehicles PDF link annotation
    • https://cdn.sqhk.co/jowapezo/geNihqA/missionchief_911_emergency_manager.pdfIn PDF document text
    • http://jijimaxugixu.22web.org/16509642000.pdfIn PDF document text
    • https://cdn.sqhk.co/daruluneti/hhbibnA/wakepula.pdfIn PDF document text
    • https://site-1178505.mozfiles.com/files/1178505/12632676900.pdfIn PDF document text
    • http://wevoselaxoto.66ghz.com/kismet_train_collision_report.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/Kjxhaif/91225142418.pdfIn PDF document text
    • http://zobebukore.22web.org/pearson_education_canada_accounting_1_answers.pdfIn PDF document text
    • http://xuvivok.22web.org/45397790394.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/ajcgh8U/69252471904.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/rojalexipokadaz/59415742730.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/apple_music_apk_mod_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/air_masses_and_fronts_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/cash_voucher_format_in_excel_free.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_off0000d071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD071 5132 bytes
SHA-256: 5e83c4c03c41f802d62cab086f07d657dd820dcba541c93f6e7f72d88099870e
font_01_sfnt_off0000e1f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F7 10924 bytes
SHA-256: 5564bd27712658bf0e44ed63a1ea3e75565e92a30d0edd4aa05cdb7e535dcb0f
font_02_sfnt_off0001075d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1075D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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