Malicious PDF — malware analysis report

Static analysis result for SHA-256 3210f64d3be8c1ee…

MALICIOUS

PDF

76.5 KB Created: 2021-02-06 04:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ed36c5128dac063b71a64b089df3cb85 SHA-1: b888b4d1e34765a7f331d5043ea3167d686d8fe7 SHA-256: 3210f64d3be8c1ee810283d5bc7d4f36525de017d8567e74849d368a41015471
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

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://jacksth.ru/123?utm_term=john+maeda+laws+of+simplicity PDF link annotation
    • http://nesobaka3.xyz/polaris_sportsman_500_service_manualvg289.pdfIn PDF document text
    • http://gonzo-3d.com/kickoff_football_tycoon_manager_gamelrw42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_6014489714321.pdfIn PDF document text
    • http://mini-camera-super.club/xinuwefidikizewodafabz819l.pdfIn PDF document text
    • http://thelandofbadideas.com/the_sculptor_s_nightmare3s2xa.pdfIn PDF document text
    • http://cleaner360.shop/85619024285fzmog.pdfIn PDF document text
    • http://kzrovk.xyz/deutsch_wortschatz_und_grammatik_b1znlls.pdfIn PDF document text
    • http://rating-bookmaker.ru/free_habitat_worksheets_for_kindergarten84ftz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427780/normal_5fff03d6cb139.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/bajapovogam/aluminum_nitride_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/widirisokov.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/riwebavomibipetakasasagon.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/play_store_app_kaise_kare_video.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/70498191510.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/timesheet_hours_worked_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/bigo_live_diamond_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/hallelujah_piano_easy_sheet_music.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_off0000ee0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0A 5480 bytes
SHA-256: 03499d678950767e45f511cd31a6a7a5da86e39a9c21282d73f698e10f601c67
font_01_sfnt_off000100a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A4 10740 bytes
SHA-256: a632305b20e59a3f3c86af08c927cdfde7e5035f704404c27dddee06cf9fb5c0

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