Malicious PDF — malware analysis report

Static analysis result for SHA-256 757f5f124d2bdb23…

MALICIOUS

PDF

72.6 KB Created: 2021-03-06 10:36:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a66fa83b094987ade057d5be378c2b04 SHA-1: 90b6d61e1e4d529e5a141de3e07ba7de2bcd4fec SHA-256: 757f5f124d2bdb233b3eca9542d54f5f94e8f334f8986f902858abe4999ff687
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/strik?utm_term=excel+vba+input+box+with+options PDF link annotation
    • http://lagejarejitog.mypressonline.com/vixijotumofamosut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_5fd1ee58168ff.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/cggaTgd/full_hd_cartoon_wallpapers_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/xomakonezema/fifQmjg/best_buy_liquors_brooklyn_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/LX8ngd8/maze_runner_4_trailer_espanol.pdfIn PDF document text
    • http://nituzovido.getenjoyment.net/vulixabefibured.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420438/normal_6017d92a168c5.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/are_wendys_fries_good_for_you.pdfIn PDF document text
    • https://cdn.sqhk.co/kewesowovim/HgeEifM/tomer.pdfIn PDF document text
    • http://wejaduz.mypressonline.com/book_report_activities_for_high_school.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471114/normal_5fd7e9ac4c19f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rewuwuja.onlinewebshop.net/refonabolikuxurisifoxiziz.pdfIn PDF document text
    • https://30621b86-6952-4b41-80af-4d24d830bc7c.filesusr.com/ugd/122077_db0a7aec86fc4d4db2c1ff6fb5092c56.pdf?index=trueIn PDF document text
    • http://kulebosux.myartsonline.com/how_to_stop_smoke_alarm_from_blinking_red.pdfIn PDF document text
    • http://mubusikomafu.rf.gd/poguguwufaweput.pdfIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_f6fb4454edb84d0daee4e97f1b130335.pdf?index=trueIn PDF document text
    • http://butomepa.rf.gd/38889033174.pdfIn PDF document text
    • https://1e438cd7-6f3b-42ac-a97b-d13a75fa135b.filesusr.com/ugd/0c268c_d09f7dcf359240e98cd8592b550378c7.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFE 5244 bytes
SHA-256: 24bb8c638f2009df7ac71e84c30c3d903c081b22db98c05318069c4dd3463dc9
font_01_sfnt_off0000efef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEF 10996 bytes
SHA-256: e1aedf84668fc641548f48f415dce4f0c612ce09a4ad516d466068861b4fe5fc