Malicious PDF — malware analysis report

Static analysis result for SHA-256 319ab7839b752bdb…

MALICIOUS

PDF

76.9 KB Created: 2021-03-14 09:28:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90d2c8670d3830093a7f1a20a7af3211 SHA-1: 1e731a27a4debfc66c3ea467c3dfe51fa346f9da SHA-256: 319ab7839b752bdb0bbba15b37a686bea0d2a5a8bc9a35545cebab44d98ffd44
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, masquerading as a search result. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution. The presence of an external URI and the overall classification suggest an attempt to trick the user into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/wix?keyword=landsford+canal+south+carolina
    • https://static.s123-cdn-static.com/uploads/4372735/normal_5ffa9b691f96c.pdf
    • http://nibelv.xyz/lalurufaxafufi2l1m5.pdf
    • http://jorolog.22web.org/free_boarding_pass_template_design.pdf
    • http://levantemosaic.com/vanetuwevomonozezimupiinau.pdf
    • http://chebsvet.ru/rakshasudu_chiru_songs_freepvofk.pdf
    • https://static.s123-cdn-static.com/uploads/4456984/normal_5ff7b0f24db60.pdf
    • https://cdn-cms.f-static.net/uploads/4489979/normal_601f2f780325e.pdf
    • https://static.s123-cdn-static.com/uploads/4473656/normal_5fcc25006ff99.pdf
    • http://milansit.space/a_series_of_unfortunate_events_the_wide_window_quotesjq6o8.pdf
    • http://nosinoski.shop/do_green_smoothies_make_you_lose_weightjbmeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tarizirefevifab/ceven_trke_okunulu_indir.pdf
    • https://uploads.strikinglycdn.com/files/a1a3dbf0-eb68-4324-8694-b7d2b5ef1b87/singer_sewing_machine_service_in_my_area.pdf
    • https://uploads.strikinglycdn.com/files/2540fa3b-ee7b-402d-8e85-0930849b220c/momawikunikumikez.pdf
    • https://s3.amazonaws.com/xalexojaxipud/compro_ahoyador_barreno_manual.pdf
    • http://mafakizukizunof.epizy.com/ielts_reading_passages_with_answers_download.pdf
    • https://uploads.strikinglycdn.com/files/307546f3-dc19-4b61-a5ec-1c323c7912a1/jadaruvavivuwogakukexovef.pdf
    • https://s3.amazonaws.com/feborobegibew/70322128315.pdf
    • https://uploads.strikinglycdn.com/files/b69fe1dc-669e-444f-90d4-b211763951cb/cosco_scenera_next_front_facing.pdf
    • https://s3.amazonaws.com/nolarifaforuxop/petexoxegopewiti.pdf
    • https://uploads.strikinglycdn.com/files/fbc3e7b7-cf2e-415a-b566-62a302f0f5cd/vapewukesofededikuxidate.pdf
    • https://uploads.strikinglycdn.com/files/1eaf93d8-85b1-4b4c-9e43-d1d6e8686cb4/microsoft_project_2010_free_download_mac.pdf
    • https://s3.amazonaws.com/jesidofefe/xatododakewo.pdf
    • http://lawazujazigefon.epizy.com/combinations_of_10_worksheets_first_grade.pdf
    • http://lorazak.epizy.com/2150761161.pdf
    • https://uploads.strikinglycdn.com/files/3d7c9e4c-6356-4b44-b15f-10428e150d20/greek_girl_warrior_names.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_off0000f0fe.bin
5e5d916a77d0ea86a5cf50ca55790487a9128151f36aba81b41ee459404fd277		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FE 5052 bytes
font_01_sfnt_off00010223.bin
b6cc75162e1e224ab54e1358e51e276f61aebb19deb0fdf40c95771aab9ff8c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10223 10572 bytes

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