Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb44a98dfb90f541…

MALICIOUS

PDF

102.1 KB Created: 2021-05-16 10:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a02b5e5994d61f12986f3801ff2775b0 SHA-1: 2321d4b38f4d8cd28ac7848848ea014c6a3bb3cc SHA-256: eb44a98dfb90f5417e728d68c8ef1e6ab6ea12bbdce9649d5e856b558ec25be5
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to downloading the Holy Quran, which is a common tactic for phishing and malware distribution. The presence of external URIs and the ML classifier flagging the PDF as malicious strongly indicate malicious intent. ClamAV also detected this file as Pdf.Phishing.Trojan. The embedded URLs suggest the document is designed to redirect users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://jacksth.ru/strik?utm_term=holy+quran+abdullah+yusuf+ali+free+download
    • http://mopexaxurip.getenjoyment.net/63880494027.pdf
    • http://dawexefif.getenjoyment.net/13328540171.pdf
    • https://cdn.sqhk.co/wejagamewo/jiPwnia/heart_touching_islamic_ringtones_tamil.pdf
    • https://cdn.sqhk.co/kafufojugure/hjqnKjd/boat_driver_license_mn_change_of_address.pdf
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/nebuv-rorakuba-mufisij-sepanudefipab.pdf
    • http://wivupivipewezap.mygamesonline.org/english_book_for_self_study.pdf
    • http://nefutekugurenap.mygamesonline.org/prentice_hall_mathematics_algebra_2_textbook.pdf
    • http://dikagowoxi.sportsontheweb.net/angina_pectoris_types.pdf
    • http://finoginujowiwi.mypressonline.com/jurnal_psikologi_budaya_organisasi.pdf
    • https://cdn.sqhk.co/tutabalero/T4jc5fk/my_baby_big_sister_book.pdf
    • https://nawexolaka.weebly.com/uploads/1/3/4/7/134704757/f0a0a.pdf
    • http://zugugalepew.mypressonline.com/asme_section_viii_division_2_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vimitafukufes.rf.gd/4416928342.pdf
    • https://a765b249-d442-4b07-8ea9-8318d996b894.filesusr.com/ugd/902d29_e7632592418d403b981ba7731e21bf66.pdf?index=true
    • http://ximuxulizi.myartsonline.com/physics_formulas_for_10th_class.pdf
    • http://jonisijuxopud.epizy.com/btinternet_imap_settings_android.pdf
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_eb91fabfa3c142859ce0a370a628c894.pdf?index=true
    • http://pixafur.atwebpages.com/articles_worksheet_with_answers.pdf
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_9e1f506ff8c04a58b5c04fc90106ed45.pdf?index=true
    • http://jivugojazop.epizy.com/bagimedigitawun.pdf
    • http://vaxinot.epizy.com/que_titulo_necesito_para_abrir_un_taller_mecanico.pdf
    • https://8b8c7005-3af0-45a1-8e5b-a6902caa9335.filesusr.com/ugd/dbd7d9_09bd91f47a0246cc8e4e7d048cf8974b.pdf?index=true
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_e4cbda69d2ad46898821401ca8b10f8a.pdf?index=true
    • http://bepolujogox.atwebpages.com/thermo_king_apu_memphis_tn.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00015f4e.bin
2cf3ce5d80d8b1d474bc7b7d8d43baa7f7f3ddb28721446d46a82746a165701c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15F4E 24036 bytes
font_00_sfnt_off000122a3.bin
5f4ec8c9d43462febc522a583807b4f1e38a1d501f728a95e951a376d7794c48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122A3 5416 bytes
font_01_sfnt_off00013519.bin
45ea2e0f1a411a85930208ddd4eaa4abfacbec3de3145bef94573c3be7b640d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13519 13020 bytes

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