Malicious PDF — malware analysis report

Static analysis result for SHA-256 99603b7eac573f3d…

MALICIOUS

PDF

74.9 KB Created: 2021-02-22 21:51:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f9a0e0ba0c4dba4c911534852ce46769 SHA-1: 7446812d997b57181e2542cefff8c5c05ae48fe7 SHA-256: 99603b7eac573f3d8eddb118fac7369c8f5eece50456a1eb54708ccf8f2247ca
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=verbos+irregulares+en+ingl%25C3%25A9s+pdf PDF link annotation
    • https://cdn.sqhk.co/verexoleki/jmKpjf4/18459364207.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/9jazjik/wujupijefuzepipuf.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/rk0giic/t_mobile_prepaid_promo_code.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494136/normal_6002a70374217.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480736/normal_601e12561053e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383802/normal_5fc87d6d40cda.pdfIn PDF document text
    • http://bunezafax.22web.org/12978919707.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/9Lg0ago/instagram_logo_black_background.pdfIn PDF document text
    • https://cdn.sqhk.co/dilujuzaga/ktjgigw/road_traffic_accident_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/vutenugade/Vicjaje/video_live_wallpaper_iphone_x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403937/normal_600891fa9067c.pdfIn PDF document text
    • https://cdn.sqhk.co/vonitumefide/i4Zgfja/banadifis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/4507971367.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/what_is_an_inception_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/housekeeping_supervisor_checklist_template.pdfIn PDF document text
    • http://mepulufe.epizy.com/sugox.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/dragon_ball_legends_android_21.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/best_bollywood_sad_songs_mr_jatt.pdfIn PDF document text
    • http://jetizugig.epizy.com/solo_full_movie_free_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/troy_bilt_675_pressure_washer_oil_change.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47E 5456 bytes
SHA-256: 415930c0975c82a24b35e210af3596de9d4081e244bfa29b2d35b723df5f5228
font_01_sfnt_off0000f6d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D6 11672 bytes
SHA-256: e94709cd80eefcae84379ca0da0cda5777ea9eb5da37fa80bb1e860232153ad0

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