Malicious PDF — malware analysis report

Static analysis result for SHA-256 1872b569591960ad…

MALICIOUS

PDF

77.4 KB Created: 2021-04-05 16:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f91639f2024a0ddfae45a9012bf18db SHA-1: bd74931e5f47217eef17b14792edadf3b0379c9a SHA-256: 1872b569591960ad854b618378ef7d426d53a3c4db3ef02e2af5c90991107902
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though obfuscated, suggests a lure related to a 'functional gait assessment outcome measure'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://vilenefex.ru/strik?utm_term=functional+gait+assessment+outcome+measure
    • http://mabisipi.iblogger.org/64008331135.pdf
    • http://mugedly.xyz/fivagesetituxexokaw1d91.pdf
    • http://finomimetafix.sportsontheweb.net/amoeba_sisters_meiosis_worksheet_answer_key.pdf
    • http://kolomata.ru/the_maze_runner_full_movie_download_in_tamilyogi38dv7.pdf
    • http://steblin.pro/table_b.2_of_the_wais-iv_administration_and_scoring_manualf8my0.pdf
    • http://meetsucre.pro/st_johns_brass_band_songs_mp3_downloadngi1j.pdf
    • http://tevuvisena.iblogger.org/metodologia_de_pesquisa_bibliografica.pdf
    • http://yognat.space/nrcme_study_guidenqqko.pdf
    • http://musofiron.ru/irobot_braava_m6_vs_2409hdzp.pdf
    • http://vosajizegek.mypressonline.com/asme_b36._10_download.pdf
    • http://devivitonewe.sportsontheweb.net/jp_3_12_cyberspace_operations.pdf
    • http://tamodemuror.getenjoyment.net/ceh_v9_certified_ethical_hacker_version_9.pdf
    • http://momentshop.space/11332756834uj76o.pdf
    • http://detonic-romania.website/atomic_blonde_full_movieebc33.pdf
    • http://basiditdcf.space/what_to_do_if_your_lenovo_tablet_wont_turn_onk2slt.pdf
    • http://ukranews.icu/fosox7yi0j.pdf
    • http://belldiscount.ru/cigna_ppo_provider_manual0poy6.pdf
    • http://hyipinvest.site/plantronics_backbeat_fit_hard_resetoa9a4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zonurupadul.atwebpages.com/voletujizozevevinojodeku.pdf
    • http://rodedewezijore.atwebpages.com/20122207898.pdf
    • http://pefegisip.epizy.com/cardiopatia_valvular.pdf
    • http://nunivigel.epizy.com/machiavelli_the_prince_free.pdf
    • http://pogetowem.onlinewebshop.net/how_to_rebuild_small_engine_carburetor.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f129.bin
b9c925baace18d786fcdba0f1532063c90acc031bca1e5bdaad753ded0fc59e7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF129 5072 bytes
font_01_sfnt_off00010256.bin
07b9ed2e7b6fe5f3b92e3008b257449b86a74b21ded551d7e877b6c7b2f673e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10256 10964 bytes