Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8fe6aac539ecac…

MALICIOUS

PDF

75.2 KB Created: 2021-03-29 14:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bf2db5aabf74e729fa24d6807e1be5e SHA-1: 96682c25465e5fb073b2f620980c5152c95265f8 SHA-256: 5a8fe6aac539ecac4d5668e51dab546409a34546847069bfd70f1ead9a88ad55
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 a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/strik?utm_term=where+is+the+learn+button+on+liftmaster+security+2.0
    • http://dotixomovi.sportsontheweb.net/xoreporelifakorarawon.pdf
    • http://revunazem.22web.org/al_quran_30_juz_full.pdf
    • http://lukisasore.mywebcommunity.org/ejemplos_de_tesis_de_administracion_de_empresas.pdf
    • https://cdn-cms.f-static.net/uploads/4488604/normal_6056c5259b463.pdf
    • https://cdn.sqhk.co/jeforije/jjfjeQX/did_the_floor_is_lava_host_died.pdf
    • https://cdn-cms.f-static.net/uploads/4405186/normal_5fd1f003bf77a.pdf
    • https://cdn.sqhk.co/funixatugesi/bjbt3Lq/93535178740.pdf
    • http://kigumelez.medianewsonline.com/poverty_alleviation_programmes_in_karnataka.pdf
    • https://cdn-cms.f-static.net/uploads/4476566/normal_6033ba4e91004.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/widofafane/what_is_feng_shui_room.pdf
    • https://s3.amazonaws.com/rupatojuko/totedixedurefuvor.pdf
    • https://s3.amazonaws.com/lebaxa/boulter_camray_compact_50_70_manual.pdf
    • https://s3.amazonaws.com/jeduzizonox/itel_mobile_dialer_android_apk.pdf
    • https://s3.amazonaws.com/pezofut/depinawudoxorigopulirom.pdf
    • http://penobugixova.atwebpages.com/ozeri_scale_calibration.pdf
    • https://s3.amazonaws.com/xomudufe/japan_tour_guide_app.pdf
    • https://s3.amazonaws.com/wopari/icewind_dale_2_classes.pdf
    • https://s3.amazonaws.com/mogedozara/dizoritefuwexomupuk.pdf
    • https://s3.amazonaws.com/kujesulad/pagizotagerumabimabo.pdf
    • http://tarexokugizizo.epizy.com/bw3_menu_with_prices.pdf
    • https://s3.amazonaws.com/somisilegex/how_to_pair_beats_powerbeats_3.pdf
    • http://sejisetelasisel.epizy.com/hey_soul_sister_easy_piano_sheet_music.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_off0000e293.bin
6c5abab9e686356138decadc05a34d702bebec68588538431a8abc6c912f96bb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE293 5680 bytes
font_01_sfnt_off0000f5d4.bin
761450f3f155c11f8ece315698330d440632a57c2e1743019c19e108e9b7f62a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D4 12152 bytes