Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7be32f8c0a6556…

MALICIOUS

PDF

81.5 KB Created: 2021-03-02 10:56:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 032462dac13a87ba2bd03a555cdd1667 SHA-1: 278a882c7ba56ffbbb8cf05d75078e7a29677da8 SHA-256: 1e7be32f8c0a65564b4d5deae2962b6b8937726c98caf31d553dc2169d5426f8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it is designed to redirect the user to a malicious site, likely for further exploitation.

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://zajinet.ru/wix?keyword=el+verbo+ir+worksheet
    • http://likedizar.medianewsonline.com/72617582171.pdf
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5feb1890d081e.pdf
    • http://nebofonuve.mywebcommunity.org/2543091533.pdf
    • http://fasekafalig.scienceontheweb.net/nozurata.pdf
    • http://kebawed.iblogger.org/71809200056.pdf
    • http://sijubuwejipamun.mywebcommunity.org/zinizisasumutedeze.pdf
    • http://xuxijosut.sportsontheweb.net/how_to_setup_my_belkin_router.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xapijifas/alphabet_tracing_worksheets_for_toddlers.pdf
    • https://s3.amazonaws.com/xisefowu/ibc_amendment_2019_bill.pdf
    • http://dudoluv.rf.gd/janesugolifufovegopew.pdf
    • https://s3.amazonaws.com/domegagowevag/learn_german_grammar.pdf
    • https://s3.amazonaws.com/lakadutof/football_index_beginners_guide.pdf
    • https://s3.amazonaws.com/rodakarugupoko/bingo_numbers_sheet.pdf
    • https://s3.amazonaws.com/xalasawu/duniya_song_whatsapp_status_pagalworld.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff00.bin
eca58f4d9345f07aed2cf251438633072bc5dc3c3c872456a6cfbce1784dea25		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF00 4876 bytes
font_01_sfnt_off00010fab.bin
0dc86283ac746b8cd47a6dcdec340b6c403ee73dc0742d0acd9ec9b4c46db7d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAB 13024 bytes

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