Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ddb23ebfb6f8f7…

MALICIOUS

PDF

78.8 KB Created: 2021-04-04 12:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3554e182d0bd91c52452952a9572360 SHA-1: bc17040886e6f790d7cb90208be8b2e3cc85e757 SHA-256: e4ddb23ebfb6f8f7d9da486265916eab2def229e113b2b420cb9aade99b36a6a
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to government templates, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://mezovuduw.ru/123?utm_term=federal+government+briefing+note+template
    • https://cdn.sqhk.co/dexizajifu/jhvjbgi/halloween_party_games_for_college_students.pdf
    • https://cdn.sqhk.co/puwipaneke/ahf6haV/sakemanumo.pdf
    • https://static.s123-cdn-static.com/uploads/4465702/normal_5fdfc240ed290.pdf
    • https://cdn.sqhk.co/mamevugixej/cb3gigf/wiwebunurumopiju.pdf
    • https://cdn.sqhk.co/wepunajexiju/7CSbVhh/best_free_secure_folder_app_for_android.pdf
    • https://static.s123-cdn-static.com/uploads/4496577/normal_5fcb7bbd0dfc9.pdf
    • https://cdn.sqhk.co/guranotup/tUibgfI/5587339391.pdf
    • https://cdn.sqhk.co/mugolino/Wryiihh/choices_love_hacks_mark_and_dani.pdf
    • https://cdn.sqhk.co/valujoper/ibQ7CyQ/40266364392.pdf
    • https://cdn.sqhk.co/fogibadeku/giijhjr/stacked_bar_chart_tableau.pdf
    • https://cdn.sqhk.co/tivanosox/qTttghD/24068172291.pdf
    • https://static.s123-cdn-static.com/uploads/4405206/normal_6006664539438.pdf
    • https://cdn.sqhk.co/ledivure/ugiid1y/offline_video_downloader_for_android.pdf
    • https://cdn-cms.f-static.net/uploads/4461777/normal_600fb1f27c712.pdf
    • https://cdn.sqhk.co/wagejino/xYidmhg/84741929647.pdf
    • https://cdn.sqhk.co/siwemawatu/egeifp4/marshmello_dab_wallpaper_4k.pdf
    • https://cdn.sqhk.co/wobuwaseja/ijhhspu/lejupasivafibadogani.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kopurelotalad.onlinewebshop.net/73981136615.pdf
    • https://s3.amazonaws.com/tabobujimo/ludalifozoku.pdf
    • https://s3.amazonaws.com/popisiburewixuj/foritasifibalamuviniwuke.pdf
    • https://s3.amazonaws.com/xomudufe/95323203260.pdf
    • https://s3.amazonaws.com/zuvovoxigumuz/arris_sb6121_manual.pdf
    • http://tuzuxutetug.atwebpages.com/vesavipi.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_off0000f375.bin
388c031f2265fbfbaddab76d5744358925781ac6b4737220746517179c2cb261
pdf-font-stream PDF embedded font (sfnt) at offset 0xF375 5340 bytes
font_01_sfnt_off00010592.bin
6dd932d09c0b05cc07d5f9395e808c240807b95ac53ba14bee1a12ceb3ac616c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10592 11228 bytes