Malicious PDF — malware analysis report

Static analysis result for SHA-256 0598231018ef36c9…

MALICIOUS

PDF

71.7 KB Created: 2021-01-03 12:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 104bd03f1fbb00e9b1abe5aad669b12d SHA-1: 77525eb1600a3594489bf04e72794081f9ba62dc SHA-256: 0598231018ef36c910eefd4df121700548fadff8335c45506907a9abc0922819
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=auto+rotation+app+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445337/normal_5fd65a439081a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370996/normal_5fdb27ff5d854.pdfIn PDF document text
    • https://cdn.sqhk.co/gasubapo/2ERifid/24730487844.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405413/normal_5feb40a93025d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd17018d29a7.pdfIn PDF document text
    • https://cdn.sqhk.co/duzupafuj/ibYnoif/maize_maze_albuquerque.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_5fd94c8f15c36.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/98226213146.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/ionic_app_stuck_on_splash_screen_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/absolute_value_equations_and_inequalities_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea60f2d6-3766-4488-bdf1-ce5df5389d25/3502046671.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f23dbf08-baef-43ec-a644-3d04acfb60fe/yee_yee_song_tik_tok_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/komativanonuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/audi_r8_performance_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/atelier_rorona_plus_trophy_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3E 4676 bytes
SHA-256: 97dd894d96ca2e224b9b643bed8f303abc1e3e174678d25d2091f9eaaad51938
font_01_sfnt_off0000ec34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC34 11156 bytes
SHA-256: 050660a948b3240af929a30016f263d4d26dd3a3a1a1e09ffb450019b654b3b5