Malicious PDF — malware analysis report

Static analysis result for SHA-256 023844cd6d9921f4…

MALICIOUS

PDF

84.6 KB Created: 2021-03-17 09:15:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 933312556e712b8554027bb72d20bfee SHA-1: 2ea4d4abab867a4338daeb3f83a1411d21e1ada0 SHA-256: 023844cd6d9921f4db435784e761f59c71e13fa2873b6a53785d63df8da383ef
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 0.9996

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://xajibur.ru/strik?utm_term=sugu+beauty+bubble+sheet+mask+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427785/normal_6008220c1c321.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/hijeiad/chaos_rings_iii_apk.pdfIn PDF document text
    • http://busibear.com/vaxugebegupani7ath5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5fc7469c51d75.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/eRgdgjG/samsung_gallery_cloud_icon.pdfIn PDF document text
    • http://afracheat3.xyz/mov_repair_free_mac8n0y0.pdfIn PDF document text
    • http://trikolor.site/57212979743ow9nk.pdfIn PDF document text
    • http://kzrovk.xyz/what_causes_hvac_to_short_cycledzmow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_6019599942d9f.pdfIn PDF document text
    • https://cdn.sqhk.co/voguzasijur/EeCiiha/42237404198.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/d73IhyZ/sepijaxobenejumawizasabid.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/fumiposamisur/kupoguzisenorozonugijom.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/mixed_fractions_worksheets_for_grade_3.pdfIn PDF document text
    • http://wuzafup.rf.gd/sugezadukedewe.pdfIn PDF document text
    • http://datojotimesa.epizy.com/the_age_of_reason_sartre_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/camera_iphone_x_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/balu_mahi_full_movie_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/cloud_computing_platform.pdfIn PDF document text
    • http://kanisisasulaba.rf.gd/20471646235.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/android_api_file.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/manualidades_halloween_2019.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_off0000fedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDF 5324 bytes
SHA-256: cd0fedde87177dd855fcb8ffd8efe15834f433138fe2d642f8024144fc355f8b
font_01_sfnt_off00011109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11109 11196 bytes
SHA-256: 06b8fa625ec91ceb0426fdac55b64b467305f3fb236810f387403281160bad0a
font_02_sfnt_off00013710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13710 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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