Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d12ad4bdfa997c…

MALICIOUS

PDF

68.6 KB Created: 2021-03-20 12:29:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f81365968d0e513f24fa5e089e80397 SHA-1: a30b8cfbec40df7b1078b9daa29a9cf9281d531a SHA-256: e7d12ad4bdfa997c254962e31721d3b32e5920865ff8db3bb978833ffe38675b
96 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, containing an embedded URL pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to 'alarm evacuate building sound effect', indicating a phishing or social engineering attempt. The presence of embedded URLs and the overall detection score strongly suggest this file is part of a malicious campaign, likely a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jumiwimov.ru/123?utm_term=alarm+evacuate+building+sound+effect
    • http://vadosaj.getenjoyment.net/2006_honda_civic_hybrid_battery_reconditioning.pdf
    • https://cdn-cms.f-static.net/uploads/4485591/normal_602e007077f41.pdf
    • https://cdn.sqhk.co/lexaxemiji/jhfUIhs/gotopasebe.pdf
    • https://cdn-cms.f-static.net/uploads/4404308/normal_601689c676573.pdf
    • https://cdn-cms.f-static.net/uploads/4417208/normal_605003760f1e2.pdf
    • https://cdn.sqhk.co/vefemenivu/jefihc2/chick_corea_spain_sheet_music_flute.pdf
    • https://static.s123-cdn-static.com/uploads/4403534/normal_5fe5ad29350fb.pdf
    • http://terugate.mypressonline.com/63196988890.pdf
    • http://worajovijize.22web.org/708782505.pdf
    • https://cdn-cms.f-static.net/uploads/4388040/normal_6015febf2b9c3.pdf
    • https://cdn-cms.f-static.net/uploads/4426832/normal_60339054c5832.pdf
    • https://cdn.sqhk.co/zogobadakedu/TKhhifR/kanozozu.pdf
    • https://cdn.sqhk.co/sawibevas/gjiiNib/unicorn_petting_zoo_whistler.pdf
    • http://kugaraginoja.mypressonline.com/murobimafujelenemuvu.pdf
    • http://palikexifumalam.mywebcommunity.org/canadian_immigration_process.pdf
    • https://cdn-cms.f-static.net/uploads/4412908/normal_600dac294c99c.pdf
    • https://cdn-cms.f-static.net/uploads/4443344/normal_5fe8dfc1185df.pdf
    • https://static.s123-cdn-static.com/uploads/4475379/normal_5ffd613a3bb36.pdf
    • https://cdn.sqhk.co/nezusoxe/iIhdjim/ximipubegibefotefevogogo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://witopovuketoj.epizy.com/25575780908.pdf
    • http://ligoroxenafof.atwebpages.com/xexojotuguk.pdf
    • http://tuvufuxo.epizy.com/catholic_faith_formation_at_home.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_off0000cc96.bin
91664d479474858e1229078fd169bca57f7f5a04dd68e5187029f14565817cfc
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC96 5528 bytes
font_01_sfnt_off0000df54.bin
df1b83be842ebaec044bd2b1db4f6b6d66b8409d592c5b9320ded4240f557c81
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF54 11084 bytes