Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfebe28a1216d798…

MALICIOUS

PDF

84.4 KB Created: 2021-03-09 20:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a8b2f1fcc3cfe1203b2006da1b63e875 SHA-1: fe217f880cd310dec2bc34869a27fc403a5660bc SHA-256: dfebe28a1216d798a375492350eebdc9c76e546e41dcd93d8dd683f685610d9e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to deliver a secondary payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=anatomy+and+physiology+1+lab+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404757/normal_5fe543dfea3a5.pdfIn PDF document text
    • http://wurigakisedepov.iblogger.org/36683728763.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/hfvzicT/48572120594.pdfIn PDF document text
    • http://fapegag.22web.org/72690481045.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/Wdgdxid/19901555091.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/ie2iegc/lolexuda.pdfIn PDF document text
    • http://chaptejvxz.fun/ashes_score_sheetu4p53.pdfIn PDF document text
    • http://itslm.fun/zakaseduvzjcx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_60344445d77a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501045/normal_5fd10bf1e5ff0.pdfIn PDF document text
    • https://cdn.sqhk.co/zativojor/ihjedej/zombie_hunters_arena_online_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403940/normal_5fe866dd231ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495686/normal_5fe45fe792f9e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kovilowab/64233790918.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/91221190405.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/brawl_stars_hack_apk_android_oyun_club.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/art_studio_app_for_android.pdfIn PDF document text
    • http://ponazuxunuruko.rf.gd/world_of_darkness_redeem.pdfIn PDF document text
    • http://puwepubofixa.epizy.com/warframe_damage_2._0_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/66653921269.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001001a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001A 5408 bytes
SHA-256: e46ab43335a1bcb4cdcce936ae33c0d05d4d57df95d61a3504d15788c3edbce4
font_01_sfnt_off00011258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11258 10328 bytes
SHA-256: 3f780fc4904f35a9c2f87da231c189fdd7a8f7bc64879313f19709b1a2cb0847
font_02_sfnt_off000135b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B5 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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