Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d45fde2345d85d0…

MALICIOUS

PDF

69.4 KB Created: 2021-05-14 07:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c8a049d8d12438d48982ac9586812112 SHA-1: 133905040b1acc2ca05585932add9b6985185217 SHA-256: 9d45fde2345d85d0785d9d68e0c4594af5118b09c4e156d976d834392eb79130
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, identified by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://jacksth.ru/strik?utm_term=west+bend+egg+cooker+reviews PDF link annotation
    • http://zahlungsservice-ch.site/40249930556a7mf1.pdfIn PDF document text
    • http://4kuhd.me/neuer_harry_potter_film_2020_trailer_deutscht10fe.pdfIn PDF document text
    • http://lestyprin.online/how_long_to_get_to_mt_fuji_from_tokyoyr5ws.pdfIn PDF document text
    • http://zofiziz.getenjoyment.net/digawegupezazu.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/zefijotakovukefudamududug.pdfIn PDF document text
    • http://tur8osale.site/19623996021va4a7.pdfIn PDF document text
    • http://zdorovie-vashe-vse.xyz/18525983514fi7ek.pdfIn PDF document text
    • http://ru-dev.xyz/61220253381ki2u.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/como_se_hace_un_seminario.pdfIn PDF document text
    • http://taygerr.com/how_many_calories_are_in_bow_tie_pastae51lj.pdfIn PDF document text
    • http://cherrypimp.online/fupetufibomofomuslypq.pdfIn PDF document text
    • http://jopagozopive.medianewsonline.com/42086280847.pdfIn PDF document text
    • http://voirlo.xyz/12338747615zsdcp.pdfIn PDF document text
    • http://tersq.fun/bulukilopakadis49a53.pdfIn PDF document text
    • http://pedron.fun/wheres_waldo_scary_pop_uprff8t.pdfIn PDF document text
    • http://marinarus.space/how_to_change_settings_on_philips_respironics_cpapaat2u.pdfIn PDF document text
    • http://store50off.info/33278887324a23zl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/toliwudalamem/nikon_p520_review.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/lutuwez.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/embolismo_liquido_amniotico.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/invasive_species_video_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/zojirushi_ns-lac05_quinoa.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/4452996935.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/9604580567.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/indices_worksheets_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/two_step_equations_with_fractions_and_decimals_worksheet.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC663 5020 bytes
SHA-256: e8271dfd6233ba9b29413628ef07909b566364e88d66405ebe034554e2a062e4
font_01_sfnt_off0000d796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD796 9532 bytes
SHA-256: b590034fb522219a77a89b0a8a1c9a6f6b3e149a4f32afa38f2800792bb0dca6
font_02_sfnt_off0000f82f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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