Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b5bf79986a2a55…

MALICIOUS

PDF

87.0 KB Created: 2021-03-28 05:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4edda8e2e090423b8ce909202fb2fe35 SHA-1: 10fb352237c50c82b9290d470264d94ec6fba032 SHA-256: e1b5bf79986a2a550368b29917ba9b849453b5826fa4e780639ca4d8e2d7341f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a resource designed to trick the user into downloading a malicious file. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/strik?utm_term=the+ultimate+small+business+marketing+book+pdf
    • http://kufagexuwinu.22web.org/alkyd_resins_technology_handbook.pdf
    • https://cdn.sqhk.co/febapaji/fFgd9Et/soccer_heads_championship_2015_16.pdf
    • http://notudokebifapaf.22web.org/waverunner_mk4_manual.pdf
    • https://cdn.sqhk.co/zolaxadivowe/ccjihij/cop_car_simulator_game_online.pdf
    • https://cdn.sqhk.co/goberirud/0WHjiKl/bowogabofogumuke.pdf
    • https://cdn.sqhk.co/sezivalaw/EdjhihS/29140820397.pdf
    • http://newapegujopabi.22web.org/zetipogilinadafatu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://divojeniro.epizy.com/pujimagekilejetatoxitado.pdf
    • http://zawuruwune.epizy.com/act_dates_2020_20.pdf
    • https://s3.amazonaws.com/tunenijexe/rajorakisufuzebowe.pdf
    • https://d09251a9-b09e-4077-8ccb-24037f005f7b.filesusr.com/ugd/a6ce17_94420f02c2804bba8eab581a3efd543f.pdf?index=true
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_8f2d978598e94bdd8c347fbf6fb252a0.pdf?index=true
    • http://todosix.epizy.com/corbett_maths_factorising_quadratics_answers.pdf
    • https://uploads.strikinglycdn.com/files/91f8805f-5e2d-4125-9747-6c11cf312d9d/lg_wm2016cw_troubleshooting.pdf
    • https://s3.amazonaws.com/tesasubawalozan/wunulegi.pdf
    • https://s3.amazonaws.com/damerirazib/73247197718.pdf
    • https://uploads.strikinglycdn.com/files/4d354e18-73fc-4f7c-84ff-6bbaec3195f5/audio_technica_lp60_needle_replacement.pdf
    • https://a7474f5d-6ec7-41e4-954d-8cb0a6a0c5ec.filesusr.com/ugd/b987d2_a9bbe1c17d4d48c5b4fb1e1c89ccc3b2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5a53d383-98a8-4a0b-a60f-3b350eff7090/hp_pavilion_dv6_drivers_for_windows_7_home_premium_64_bit.pdf
    • http://tafoboverel.epizy.com/baixar_filme_navy_seals_vs_zombies_pelo_mega.pdf
    • https://s3.amazonaws.com/pibajuwi/vidmate_video_er_apk_app.pdf
    • https://s3.amazonaws.com/winumigutam/lumabujunevapedobono.pdf
    • https://uploads.strikinglycdn.com/files/c5ac6554-b5d5-4604-8690-136df3b3229e/furubofejexipozabipusiro.pdf
    • http://bikemeno.rf.gd/oxford_bookworms_stage_2_free_download.pdf
    • http://ridezajumoso.epizy.com/xupataledigobekinera.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_off00011614.bin
27fa5941c7fbfd6718c02b620eaccf3d5a56fa792859124461946d7fc774d0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11614 5608 bytes
font_01_sfnt_off000128ed.bin
beb5cf2e9abffe9ce8edaa08012868b1ace0a49cee2d73196efefabbf109eadb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128ED 10968 bytes

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