Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bef27027592a962…

MALICIOUS

PDF

72.1 KB Created: 2021-02-21 16:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 005372a8f6c3d19e7b0e0c10af50819b SHA-1: 401e968942c7061eb621389e8feedc3fe75a6bfc SHA-256: 0bef27027592a96207a3ac975bb3bf23baee27600fb92f25035604bb69fe4265
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The ML classifier also flagged it with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=manual+choke+conversion+kit PDF link annotation
    • http://bezprovodov.guru/piwazovupojanajidesxjf1r.pdfIn PDF document text
    • http://winoorama.fun/51334495337x46h0.pdfIn PDF document text
    • https://cdn.sqhk.co/noligigibar/pigghf9/lazerikup.pdfIn PDF document text
    • http://thestablestl.com/kali_linux_download_for_mackf2qq.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/diitffG/indoor_archery_tournament_rules.pdfIn PDF document text
    • http://negozio50sconto.info/36916609185lv4dw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410190/normal_601a5425ada06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393754/normal_5fcb7cd1d23b5.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/bu0TvWe/xanoxadirivi.pdfIn PDF document text
    • https://cdn.sqhk.co/rozopebak/ieLE7ib/marketing_campaign_planner_jobs.pdfIn PDF document text
    • http://hookup153.space/zazikawuziripejowqt8yv.pdfIn PDF document text
    • http://pannochki-art.com/fexigalokejadnw1b.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/pizexopenaxu/anaganaga_oka_vullo_song_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/14587062043.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/72643148105.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/tamasha_movie_yts.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/taropamoxibi.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/home_child_care_licensing_manual_ontario.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_off0000d19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19E 4896 bytes
SHA-256: 13645ff4fe0e98c3b4c9463006a3a1ff29c26e91c645f91e8b0fba9fc941301a
font_01_sfnt_off0000e23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE23F 10204 bytes
SHA-256: 1f1adc7ab0982201a78c746ecf1b925d5f855b0d4bcc66d5321d7cdb4f7f044b
font_02_sfnt_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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