Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87fc21fa6b5899c…

MALICIOUS

PDF

70.0 KB Created: 2021-02-18 14:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 5e2c20e716d80ac7f8c121e53b1a2946 SHA-1: f8158ccccde4265f45ccfb201209c3e3122c8fda SHA-256: d87fc21fa6b5899cdb50d8a97f6a94214c614afb4992c606a3e0b485952342fc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result for a specific product. This URL, 'https://leonvi.ru/wix?keyword=beretta+m9a3+guide+rod', is likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing attack delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=beretta+m9a3+guide+rod PDF link annotation
    • https://cdn.sqhk.co/vifejoneses/gh4hbde/rpg_character_sheet_generator.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/AgfiadW/kleptocats_game_safe_codes.pdfIn PDF document text
    • http://collegegraduatecentraldating.com/jakedawevadebupivit0im3d.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/pogolo/acronis_true_image_home_2013_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/make_your_own_dryel_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/tupekoniwit.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/galvanized_sheet_manufacturing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/best_android_emulator_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/bombay_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/rt-ac66u_b1_forgot_password.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/13545872699.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/zifakajidejog.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/ascus_with_negative_hpv_guideline.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_off0000c830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC830 5080 bytes
SHA-256: 8112e5712e913540c18ddadb700444cdee2b29c568384f3cc9f2b9586485059e
font_01_sfnt_off0000d976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD976 10156 bytes
SHA-256: 2d094f991039dee0a502717ea95ed04821182e0e510c64b3110273a4ccf45b5d
font_02_sfnt_off0000fbc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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