Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1cc0f7efb0d988b…

MALICIOUS

PDF

75.3 KB Created: 2021-06-12 06:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8563e7b3b53c565d4cd5d79c3e6eddba SHA-1: 3d0612e361644672e3e8ad5f1e3e19a9871a8b55 SHA-256: d1cc0f7efb0d988b57343193dcb4b7aaa95b198ef4b5c67b29cb9c35ae60d374
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent external URI pointing to 'garglob.ru'. The PDF's structure suggests it functions as a link farm, aiming to redirect users to potentially malicious sites.

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://garglob.ru/pbw?utm_term=diamond+ft+fally PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416154/normal_606ca7e80e9c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408976/normal_5ff7a76747f80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473637/normal_6058fe0e15c83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382772/normal_6069899db72db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tojasakamu.pbworks.com/f/bleach_brave_souls_accessories_guide_2020.pdfIn PDF document text
    • http://dipazuwawex.pbworks.com/f/wekutusamup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e551df7-8bdc-489b-abb6-50b4e90bc489/types_of_police_operation.pdfIn PDF document text
    • http://radejaki.pbworks.com/w/file/fetch/144766731/zarupukexixalunujul.pdfIn PDF document text
    • http://gupiguna.pbworks.com/f/les_nergies_renouvelables_en_algrie.pdfIn PDF document text
    • http://fixiguru.pbworks.com/w/file/fetch/144683109/gopilalejamote.pdfIn PDF document text
    • http://bawamotijeku.pbworks.com/w/file/fetch/144573615/download_chess_rush_mod_apk_2020.pdfIn PDF document text
    • http://nimulivupale.pbworks.com/f/bekumamujizufi.pdfIn PDF document text
    • http://mavujeridolu.pbworks.com/f/pokemon_blazed_glazed_mega_evolution_list.pdfIn PDF document text
    • http://verodudowop.pbworks.com/w/file/fetch/144904401/cbse_class_11_computer_science_textbook_c.pdfIn PDF document text
    • http://rimikupababo.pbworks.com/f/bosch_300_series_dishwasher_issues.pdfIn PDF document text
    • http://legesir.pbworks.com/f/battle_royale_games_free_download_pc.pdfIn PDF document text
    • http://mawasuwov.pbworks.com/f/how_to_reset_gate_remote_control.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4efc8fe4-a039-4eb1-bfc6-25605f4236c6/how_to_take_off_liftmaster_cover.pdfIn PDF document text
    • http://liguduper.pbworks.com/f/league_of_legends_tft_cheat_sheet.pdfIn PDF document text
    • http://mivegaz.pbworks.com/f/solving_quadratic_equations_with_complex_solutions_calculator.pdfIn PDF document text
    • http://zipiwume.pbworks.com/f/kakujeda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78142fa1-d1bd-44d7-a2a4-6c2aad3bed31/how_to_fill_a_presta_valve_with_a_hand_pump.pdfIn PDF document text
    • http://guvevef.pbworks.com/w/file/fetch/144761427/supersonic_warriors_2_download.pdfIn PDF document text
    • http://rutarotovez.pbworks.com/f/bolha_na_sola_do_p_o_que_fazer.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_off0000e93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93C 4880 bytes
SHA-256: 205eea047e5a64fcfaca7b1ce5a6cc4c786445744489084568eeea1e7641c273
font_01_sfnt_off0000f9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D6 11548 bytes
SHA-256: 4af1e9623018bd60cce710075f79c49465cd31695b787443b7463eb81f530735

Open this report in the interactive analyzer, or submit your own file for analysis.