Malicious PDF — malware analysis report

Static analysis result for SHA-256 358afe6cd8a2fd65…

MALICIOUS

PDF

82.5 KB Created: 2021-03-22 20:09:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3dc47692cc85ac9a565b93e02bdb04ad SHA-1: 528ba6720a5c34d59dc284e8a076d6e7b63e5bec SHA-256: 358afe6cd8a2fd6566addfaaf947cc6af3772b47a72a779ce2a786a18001589c
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 0.9998

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://jumiwimov.ru/strik?utm_term=how+big+is+30+cm+in+feet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475217/normal_601dcad107a0c.pdfIn PDF document text
    • http://thelait.pro/621106459924v5bq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450898/normal_5fd719022556d.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/what_jobs_can_u_get_with_an_international_business_degree0qz3e.pdfIn PDF document text
    • https://cdn.sqhk.co/gavebibi/78ozfgc/34230815425.pdfIn PDF document text
    • https://cdn.sqhk.co/favosejo/EUEgdhg/82879241152.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/wSZnieD/shoot_the_apple_game_download.pdfIn PDF document text
    • http://italia-doc.space/15622789439p0zbi.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/safago/68984583271.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/math_worksheets_grade_2_free_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/alcaloides_del_cornezuelo_de_centeno.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/5207742123.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/visezexujuj.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/how_to_connect_samsung_soundbar_to_samsung_tv_through_bluetooth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14d86624-b717-4294-82e8-e18141c40515/an_introduction_to_language_9th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/859272e7-c4f1-4bdc-ac1e-4b5f81c0377b/que_sucede_en_los_terremotos.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/how_much_does_it_cost_to_adjust_a_watch_strap.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/nafodidijipexovesamil.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_off000105ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FF 5360 bytes
SHA-256: 756abda1a1b318346b2de52987dd51fcea6a30afc48b5be88c265215a7e482bb
font_01_sfnt_off00011853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11853 10756 bytes
SHA-256: 6176c246e141b4ce8b1f2d1654f8fa3562e210272b6af508e0914bd28ba73f24

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