Malicious PDF — malware analysis report

Static analysis result for SHA-256 78be01aa3ccfeaa4…

MALICIOUS

PDF

71.3 KB Created: 2021-02-11 18:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7e2ac9f3a82f12e9fca8a3cdfd4ba42b SHA-1: 6ad261b2798963a7668cffece413caf3b611c6eb SHA-256: 78be01aa3ccfeaa4c128678e2a87b17a4e509e93a2fd0f73cdb6c03c6dce54f4
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=self+employed+letter+of+income PDF link annotation
    • https://cdn.sqhk.co/ruzaxube/j6hiSha/kigetonezugojivigedomokir.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/jhlWqje/overkill_3_pc_keyboard_controls.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/hdjjfij/mega_hit_poker_texas_holdem.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/jjhdIQt/wojimegozesekijiretu.pdfIn PDF document text
    • https://niwogowepovem.weebly.com/uploads/1/3/4/7/134767936/dixub.pdfIn PDF document text
    • http://eslife.pro/46531476513php8q.pdfIn PDF document text
    • https://fijogukovope.weebly.com/uploads/1/3/1/3/131379832/09c6af7.pdfIn PDF document text
    • http://mysteps.online/9659976274671w4w.pdfIn PDF document text
    • https://cdn.sqhk.co/xumefotebe/OoNpig1/ziluvogawekisij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kibulirol.rf.gd/61619223083.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/chime_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/48165725415.pdfIn PDF document text
    • http://julivaradisakit.rf.gd/69009374181.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/turboprop_flight_sim_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/new_year_s_resolution_planner_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/sakhi_telugu_songs_free_doregama.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_off0000db90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB90 5120 bytes
SHA-256: 02a56a0ca48ce3a25241ab1677da1abde6cb4921938de168597b1fd0d9976609
font_01_sfnt_off0000ecf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF9 10352 bytes
SHA-256: a31d76a1851ca0edc232796616b20145431176fef18fec48fa659a0271670a82