Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c4980acc608aa3…

MALICIOUS

PDF

80.2 KB Created: 2021-04-04 13:20:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ef620e9d7e2a8b61a55fbb3d121ed15 SHA-1: d0b570df1c817ea38056b63123048df355eb03c8 SHA-256: 05c4980acc608aa3bf514dabe080b9065a3bed056c7156933273d6e4c663c88b
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, indicating a high likelihood of malicious intent. The embedded URL, https://botokaw.ru/wix?keyword=riddle+school+3+walkthrough+text, suggests a phishing or social engineering lure, likely attempting to direct the user to a compromised or malicious website. While no scripts were extracted, the PDF structure and embedded URLs are strong indicators of a phishing attack.

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://botokaw.ru/wix?keyword=riddle+school+3+walkthrough+text
    • http://big-ita.space/467859777945ap8.pdf
    • http://lnstagramsecurity.net/79948608806iclku.pdf
    • http://vijusatilikuri.iblogger.org/xirofedo.pdf
    • http://sovuradema.medianewsonline.com/97332686066.pdf
    • http://tideboweped.medianewsonline.com/carbonation_test_procedure.pdf
    • http://bodyita.space/ejercicios_de_subordinadas_adjetivasfp4t2.pdf
    • https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/bc7e693.pdf
    • https://regivuno.weebly.com/uploads/1/3/1/0/131070843/duxasafi.pdf
    • http://folejaf.mypressonline.com/el_aprendizaje_cooperativo_en_el_aula.pdf
    • http://vpntop.info/begulifiriqjyth.pdf
    • http://fudoviwil.mywebcommunity.org/ip_cctv_installation_guide.pdf
    • http://easterthjg.com/557545269696tyiw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://92fbd7ca-8480-4723-bb2c-19523f9dca15.filesusr.com/ugd/29946e_ab9109034a1149ee995a06604c1598bd.pdf?index=true
    • http://lofunadex.myartsonline.com/28895896204.pdf
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_290bf1d4e5364d548a76759ffea10098.pdf?index=true
    • http://tewejifofobaj.rf.gd/hobart_meat_slicer_price.pdf
    • http://zozupajekuledus.myartsonline.com/48395756523.pdf
    • http://teropisarazo.myartsonline.com/zupawojanunewuwubub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee32.bin
f853ac96690b11fff2b8d55768ec38a9299b43e8c432d4be41e6bbb11bdc3047		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE32 5372 bytes
font_01_sfnt_off000100a2.bin
9ce6933b3233fe053fc0b02b3eb81089d1db83be433249df7a13112e212b50d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A2 10732 bytes
font_02_sfnt_off0001252f.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1252F 4324 bytes

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