Malicious PDF — malware analysis report

Static analysis result for SHA-256 2968d63651db0af7…

MALICIOUS

PDF

69.6 KB Created: 2021-01-23 16:04:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 25699a94fc6a89765b2a33c64db30680 SHA-1: f48e79b661c2c5b270cc029de070a4d60226805a SHA-256: 2968d63651db0af7171a6ab4474c47cee1d5c87f1d8ef9ab403cace3bc61f46e
124 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically pointing to 'jacksth.ru' and containing 'payment+systems+in+india+pdf' in the query parameters, suggesting a phishing lure. The PDF also exhibits characteristics of a link farm on disposable hosting, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8970

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
  • 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
  • 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/aws?utm_term=payment+systems+in+india+pdf PDF link annotation
    • http://kikudesazogug.22web.org/assamese_nrc_report.pdfIn PDF document text
    • https://fedifugakebijir.weebly.com/uploads/1/3/2/6/132695471/fupiga-nalosumazad-mefogijodigero.pdfIn PDF document text
    • https://sixokibikije.weebly.com/uploads/1/3/1/4/131437702/dorina-zifafowir.pdfIn PDF document text
    • https://site-1175031.mozfiles.com/files/1175031/face_sheet_mask_for_sensitive_skin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369343/normal_5fcd196a8edd1.pdfIn PDF document text
    • https://site-1178683.mozfiles.com/files/1178683/8_ball_pool_app_download_old_version.pdfIn PDF document text
    • https://tamaxanafe.weebly.com/uploads/1/3/1/8/131856242/7063484.pdfIn PDF document text
    • https://site-1168401.mozfiles.com/files/1168401/best_friend_status_quotes_in_english.pdfIn PDF document text
    • https://rozenawaxu.weebly.com/uploads/1/3/4/5/134517597/kivaxupezukotu_raroburubuxuzi.pdfIn PDF document text
    • https://site-1177370.mozfiles.com/files/1177370/79841310774.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/mijumomub/friendship_quotes_in_bengali.pdfIn PDF document text
    • http://gavojomizam.epizy.com/cnpilot_e410_configuration_guide.pdfIn PDF document text
    • http://tejusadesivuti.epizy.com/benzodiazepinas_ansioliticos.pdfIn PDF document text
    • http://dimegebewode.epizy.com/funajaji.pdfIn PDF document text
    • http://xorikija.epizy.com/kukeruzijamijip.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/menavilizuxopipenopo.pdfIn PDF document text
    • http://nazifaba.rf.gd/oxford_discover_3_vk.pdfIn 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_off0000e62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62A 5160 bytes
SHA-256: b8f6d0ce526fdee2a8873116f5bd8b6112acdbbf2d8f4a6c410de30072f25aef
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 11008 bytes
SHA-256: 5a98da70f79b25086e6d5a645d3cdd9c5eb53c559e07764d8495f7b5576915ed