Malicious PDF — malware analysis report

Static analysis result for SHA-256 87834e378f840f4d…

MALICIOUS

PDF

91.0 KB Created: 2021-03-14 14:37:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e7762930646b5d3d28c0453711520cf SHA-1: b8b6dfb35e49f7ae2718a09bc18520728853e083 SHA-256: 87834e378f840f4d64217bf10cabbba9a50082b108502e8b23e7251b172d333f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://seumenha.ru/wix?keyword=los+dioses+deben+estar+locos+netflix
    • https://cdn.sqhk.co/finelega/gghajgQ/wugidupefipejureviwofexe.pdf
    • http://catsism.com/tafsir_ibn_kathir_english_audio_downloadh5jv1.pdf
    • http://vumajufeboxidik.mywebcommunity.org/96007957809.pdf
    • https://cdn.sqhk.co/salipini/hb9nWgi/canon_eos_700d_instruction_manual_english.pdf
    • https://cdn.sqhk.co/mifigatira/gcibrjb/beat_the_boss_2_mod_apk_unlimited_everything.pdf
    • http://vozuzutiwajuzip.getenjoyment.net/viruvagixe.pdf
    • http://japancar-sib.ru/how_to_program_comcast_remote_to_magnavox_tvcjly1.pdf
    • http://lnstagramverifiedbadgeshelpcenters.net/international_lawyer_jobs_nycksqzn.pdf
    • http://doorstepcomputers.com/4851619862506ife.pdf
    • http://lozejebivo.scienceontheweb.net/how_to_work_step_4_with_a_sponsee.pdf
    • http://pelistens.xyz/ark_survival_evolved_mod_apk_ios1c6li.pdf
    • http://yandex-delivery.cc/what_did_charles_discoverzjxxl.pdf
    • http://gta-msk.ru/the_chaser_by_john_collier_plot_analysislj104.pdf
    • http://ouily.xyz/wofidomokaxewugovebiceboe.pdf
    • http://nekidifuton.medianewsonline.com/sony_dav-tz140_5.1_review.pdf
    • https://cdn.sqhk.co/mekewufi/dBto9jh/family_island_farm_game_adventure_apk.pdf
    • http://gbarb.me/vutipuwt5x1m.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/abc7058c-5dcf-40bd-8302-58931b5ca15d/what_surahs_are_in_each_juz.pdf
    • https://uploads.strikinglycdn.com/files/d7f44f23-2992-4f3f-b339-1f3397591821/87216188411.pdf
    • http://nokejufesuw.atwebpages.com/windows_server_2012_resource_kit_tools_download.pdf
    • https://uploads.strikinglycdn.com/files/777f9c61-b9d5-4841-9928-ed87d2062953/nedukililefoxaxizelivoxol.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f842.bin
d89404ddebf543d21a124f7bdf54d87f5d97515f76b428ebcb3557ba6926ddeb
pdf-font-stream PDF embedded font (sfnt) at offset 0xF842 3304 bytes
font_01_sfnt_off00010401.bin
acb2ed52beea5509b7c1c254af8547c2f6c2344ce3bc4c5a391edd6154f14341
pdf-font-stream PDF embedded font (sfnt) at offset 0x10401 5164 bytes
font_02_sfnt_off000115a1.bin
5636d8d5fdd5a113ad317891756ad04021119b75fdafbfd8e21eb483790aa3d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x115A1 2316 bytes
font_03_sfnt_off00011f91.bin
f7197eb3eb3d3a822636fd78edc085ec6d055bc71e50196d08065755eb7db02e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F91 12424 bytes
font_04_sfnt_off000146e3.bin
6e14d9a23925fbdd927c7db5f893cbd4d80a19524b1aae448d44ee15d2611241
pdf-font-stream PDF embedded font (sfnt) at offset 0x146E3 16028 bytes