Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7603634226b7c3…

MALICIOUS

PDF

153.6 KB Created: 2021-04-07 12:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e15dd7e75ca094fa0b5cd595d089880 SHA-1: d30cfba109c6a16a3c4ca4eddd0bb017635b70a6 SHA-256: 6b7603634226b7c308593bec0304316860496922dd64b6c677e33c673284631c
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to fundamental rights, which is a common tactic for phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://kuzutuzo.ru/aws?utm_term=cu%25C3%25A1les+son+los+derechos+fundamentales+y+c%25C3%25B3mo+se+clasifican
    • https://cdn.sqhk.co/vuwewiwudesi/jhiglif/64811220417.pdf
    • https://cdn.sqhk.co/baruduwege/6ghiiir/best_characters_in_jump_force_2020.pdf
    • https://cdn.sqhk.co/vopovaroxamo/RrUqgjt/deus_ex_gog_or_steam.pdf
    • https://cdn.sqhk.co/rozesivotix/hejjhbi/glow_hockey_pc.pdf
    • https://cdn.sqhk.co/lijedubejop/gchbzic/bad_day_at_work_videos_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4410952/normal_5fdb341482175.pdf
    • https://cdn-cms.f-static.net/uploads/4472783/normal_6061e89067f93.pdf
    • https://cdn.sqhk.co/konidadelan/dpUdijj/argentine_football_clubs.pdf
    • http://pe50off.info/50804044367hc510.pdf
    • https://cdn.sqhk.co/sabiwizi/hiaib5X/42718637704.pdf
    • https://cdn.sqhk.co/ganinidunop/hjudFNU/83018347541.pdf
    • https://cdn.sqhk.co/lopokevofoti/Ehghfjg/might_and_glory_kingdom_war_mod_apk_download.pdf
    • https://cdn.sqhk.co/nolagutotato/cgf2I4y/inspirational_words_of_the_day_for_students.pdf
    • https://cdn.sqhk.co/zifalulog/h2vIwQP/wavopezuguluwusalate.pdf
    • https://static.s123-cdn-static.com/uploads/4415962/normal_6007d1ab97cce.pdf
    • http://ig-about.net/tecnicas_basicas_de_enfermeria_macmio9ycx.pdf
    • http://nesobaka3.xyz/845477067244xe0t.pdf
    • https://cdn.sqhk.co/lerotakisisa/NijjeNn/dutitowujajemutut.pdf
    • https://cdn-cms.f-static.net/uploads/4448545/normal_605b7504dc5b1.pdf
    • https://cdn.sqhk.co/titabofasika/hkghaih/samsung_my_files_login.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tawenaxogiminax.epizy.com/younow_apk_mod.pdf
    • http://boxodonobokam.epizy.com/4063451744.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_off00021a4d.bin
c138d2ffc61a4763d3971f0580531c79594a06d73a5850cd37ac07ff01914b14
pdf-font-stream PDF embedded font (sfnt) at offset 0x21A4D 5636 bytes
font_01_sfnt_off00022c80.bin
ea1298cc69fc7094039c1dcae04b20338248cca84b992a3e05abc7e060ccad33
pdf-font-stream PDF embedded font (sfnt) at offset 0x22C80 12748 bytes