Malicious PDF — malware analysis report

Static analysis result for SHA-256 193710645bfe5496…

MALICIOUS

PDF

76.5 KB Created: 2021-04-22 20:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: e396a3ca20c5b89a57d0bd224a421830 SHA-1: 2e45adaa78da7aa0414b9dff53d17a32dc213ef4 SHA-256: 193710645bfe5496a6cc85dba6b2825889e65c7bfe4f4528be28c71d31679cd3
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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
  • 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://pelibifir.ru/strik?utm_term=warranty+forever+real+estate PDF link annotation
    • http://philonio.online/how_to_access_menu_on_panasonic_tv0ipmg.pdfIn PDF document text
    • http://besuxiju.22web.org/cyberpunk_2077_ps4_patch_schedule.pdfIn PDF document text
    • http://zenezadeso.22web.org/nothing_left_to_hold_branwen777.pdfIn PDF document text
    • http://dubotivuga.22web.org/effects_of_air_pollution_on_taj_mahal.pdfIn PDF document text
    • http://plafond.xyz/presupuesto_de_capital_ejemplo_prctico_resuelto5mk2f.pdfIn PDF document text
    • http://ita-bio.space/is_a_lectin_free_diet_healthyobgbe.pdfIn PDF document text
    • http://kifepivukog.iblogger.org/chammak_challo_song_mp4.pdfIn PDF document text
    • http://jotusuwes.iblogger.org/sql_injection_cheat_sheet_owasp.pdfIn PDF document text
    • http://adminhalil.com/8724958411554hag.pdfIn PDF document text
    • http://bizelapeto.iblogger.org/pupozug.pdfIn PDF document text
    • http://senuxixuzotozum.22web.org/87292641932.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumuleg.epizy.com/home_depot_canada_tool_rental_price_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5033dffb-4141-41fb-9810-f1731913217b/corporate_finance_berk_demarzo_5th_edition_solutions.pdfIn PDF document text
    • http://roxuriwiladubew.rf.gd/87379845522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/133deb15-7e39-484e-856a-64f328ebcb5e/46119700545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/397ffab6-3a75-4a5c-a198-1acfc4b677d7/lightbown_spada_1999_how_languages_are_learned.pdfIn PDF document text
    • http://vijuzoluza.epizy.com/91092889354.pdfIn PDF document text
    • http://podoremekuzepo.rf.gd/worksheets_for_letter_s_for_preschoolers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/814a592f-a029-449c-9522-72aca1d6d7a2/jumper_film_box_office.pdfIn PDF document text
    • http://dokedajonanumi.rf.gd/45763044005.pdfIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_20422c862339450ab531fa0f9953b8ed.pdf?index=trueIn PDF document text
    • http://wafutevulutud.epizy.com/rokigilafinopif.pdfIn PDF document text
    • https://b9eb3541-094c-4606-b101-17c2291fd6e1.filesusr.com/ugd/a18601_a392466dba48439cad9a11548630e595.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/99bec6f1-c28e-4bf9-a73f-e8a8543046ee/what_is_the_best_sounding_soundbar.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_off0000eeb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB3 4936 bytes
SHA-256: 850f1564bb9ff4074a0facf734ae009919cbacecc5d42ac1f7d1dd778acc2305
font_01_sfnt_off0000ffa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA7 11028 bytes
SHA-256: 0faa8bad91a03b0fad193a4f5742fafebf9b76812fec4bb629c080cc1daba416

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