Malicious PDF — malware analysis report

Static analysis result for SHA-256 919b24470b1d6426…

MALICIOUS

PDF

91.4 KB Created: 2021-04-13 00:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d12db1a1ad6ba2ac71a5a5da1b27cace SHA-1: 5417ffe727c8cde715d1e12a545f72b2a4f63b6d SHA-256: 919b24470b1d6426bfaedb3a61363442c211d1bba7702c4fdf9ea2ffa5f027e1
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-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://midufefew.ru/strik?utm_term=summer+infant+retractable+gate+manual PDF link annotation
    • https://cdn.sqhk.co/kavuluxaja/gcnr0gf/xirifigubufonorazag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488817/normal_5fef6b7877236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_600dece1008be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424692/normal_60242e80999ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458840/normal_5fccb5803c901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497370/normal_6036b24d3016d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405946/normal_5fcace08f3d3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_605d4ea198f0a.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/gj0jd0f/best_car_crashing_games_xbox_360.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374517/normal_60025358f3791.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
    • http://jaminuzifibe.onlinewebshop.net/peters_spelling_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d62feda1-a7dc-4646-9979-cf153483adc9/pokemon_tcg_theme_decks_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/explosion_box_design_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be142871-0587-494d-b336-e46764d20b31/how_to_adjust_bass_on_vizio_sound_bar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/253c4838-0596-4929-a485-85dab4656236/harrison_internal_medicine_18th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/why_are_old_airstreams_so_expensive.pdfIn PDF document text
    • http://medexode.atwebpages.com/computer_hardware_definition_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c8b791a-e4b8-4fb2-959a-dda19b62a914/zevejatusodaxub.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_off000119e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E0 5040 bytes
SHA-256: 0dd3843f1d86462074f8e167902192c94783c8d22036628203f4b4a1774606d8
font_01_sfnt_off00012ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADE 11760 bytes
SHA-256: 36a10bd26054bf52dbd0f9c4e6c1fcd15648c4db71a7df7002eca3cebf289e32
font_02_sfnt_off00015282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15282 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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