Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef4d46d59af5509…

MALICIOUS

PDF

77.0 KB Created: 2021-04-05 07:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6d87077787a070e687de54164d10aa86 SHA-1: 8a1cc44b7083d4d445ea388604cfd3b025736c53 SHA-256: 9ef4d46d59af5509e21e4361cb428a0fe68ecf143a34d8d1b33fea8b1eeb8ac5
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 0.9995

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://lozipotod.ru/wix?keyword=vowel+diphthongs+worksheets+3rd+grade PDF link annotation
    • https://cdn.sqhk.co/kogoruzojif/hc3fhay/classic_runner_adventure_park_michigan.pdfIn PDF document text
    • http://austritkfa.com/what_is_the_most_accurate_translation_of_the_qurano4egp.pdfIn PDF document text
    • https://cdn.sqhk.co/lekavuwapefi/jgRvhgs/gatafaja.pdfIn PDF document text
    • http://copyright-notice-ig.com/how_do_you_fix_a_liftmaster_garage_door_that_wont_closemx2wt.pdfIn PDF document text
    • http://lynciguest.com/stopping_by_woods_on_a_snowy_evening_main_theme1moxr.pdfIn PDF document text
    • https://cdn.sqhk.co/rarinuva/gjQjcmR/lg_health_app_review.pdfIn PDF document text
    • http://lisolu.org/casio_illuminator_price_in_nigeria6b0l2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500904/normal_5ff00eada5859.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/ic0jhBc/ball_bounce_and_sport_inc._hedstrom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_5fdcbb893458f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_60255b219d2b5.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/risisipajole/what_words_indicate_cause_and_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/how_heavy_is_plastic.pdfIn PDF document text
    • https://a1359116-1358-4cde-afc5-3600b4bb50db.filesusr.com/ugd/3b0c81_961788f375c546bfba58ea1e3baaf353.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd5e2374-6264-4f83-a3bb-5bd3374ce599/the_real_book_bb_sixth_edition.pdfIn PDF document text
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_33ebd8a6b09642fe9a085e43add862a0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0685715c-fcec-4cd8-9dd1-be170656dab1/flip_video_camera_wont_charge.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/active_listening_skills_exercises.pdfIn PDF document text
    • https://d7b50aa0-fea3-4edc-ba9e-4ed0094b0c60.filesusr.com/ugd/7f614e_c16eeec9961042b2a824b928313ce0ef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/tibibogujod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5c6f0e1-1a13-40e6-8698-9ffe7859fa5c/51492163655.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/lotujenodakan.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_off0000ed4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4F 5504 bytes
SHA-256: 7d7eeb139ab7dc59fc7e894da60cf063d6fd388b293803d429ce75f66467dcce
font_01_sfnt_off00010016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10016 11164 bytes
SHA-256: b2513e7af3e87198f276540db5f17a612479b181b65f8b952d93c59dc2142c78

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