Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ea4353145783a6…

MALICIOUS

PDF

78.1 KB Created: 2021-03-14 12:46:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 68e28d8048457a01134306d0a5655dbd SHA-1: 3103c29852631b1f41c876f1603a9e79a74a0191 SHA-256: 93ea4353145783a6046530668e53027b845b321e3ef1019d8e49be3c3ae575d5
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/strik?utm_term=why+is+my+microwave+not+heating+up+food PDF link annotation
    • http://aromaita.space/52639079671pkito.pdfIn PDF document text
    • http://verifedform.com/aviator_movie_300mbue061.pdfIn PDF document text
    • http://ag-management.space/nofeduwujazahthvo.pdfIn PDF document text
    • http://zeropium.com/barron_s_essential_words_for_the_toefl_7th_editionq3522.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/389b7be5-a036-43b3-a12d-f39ba44e487f/centurion_generator_5000_price.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/action_games_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/exercicios_de_substantivos_biformes_e_uniformes.pdfIn PDF document text
    • https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_1793e08561154c788b85a569837f5139.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/musokejixami/88616775672.pdfIn PDF document text
    • https://0dc5016f-38c0-4e11-84f4-4717e3ef4ec7.filesusr.com/ugd/4fd84c_31f17ea8241c42428debb073535e4333.pdf?index=trueIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_7338decde31c43fa8d326e9b195ee762.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/03871ed8-abdc-4d01-a68f-635cd7e5e05e/quiz_logo_game_answers_level_36.pdfIn PDF document text
    • https://94aa8f26-b07a-4c24-bdb4-4112657565c9.filesusr.com/ugd/37428b_f5dfd4a82e844ef19845c27882b92f03.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/619a2f1e-2d21-4a32-a502-71187bf2d62d/pokemon_fire_red_walkthrough_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/manaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/63284186474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a36b46cb-629f-4163-8a28-9e7407335855/my_dungeon_shook_letter_to_my_nephew_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/adding_mixed_numbers_worksheet_year_5.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_ee5b4745ce8944eb8e758bcca948bf70.pdf?index=trueIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_9e109eb6a7784dcb9c69b120f331cb7b.pdf?index=trueIn PDF document text
    • https://02ee9779-94d6-4ec7-959f-c0f99fe19a35.filesusr.com/ugd/cdc607_527a25bd94154f3d886aa08e146c9caf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/13135d3b-ac71-460a-8c34-3bd77b9fe775/35321470113.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/studio_background_8x12_hd_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01D 5804 bytes
SHA-256: 684ee2ae772b0c461d91d9d1079a078a0176b0b66eaaae4fb958858051582671
font_01_sfnt_off000103e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E1 11468 bytes
SHA-256: 62af6ad2d9ba23daad58d217bcf2a69734ae17576ce26d8ef2e68cc5af5be316

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