Malicious PDF — malware analysis report

Static analysis result for SHA-256 3796ab36b2c925ec…

MALICIOUS

PDF

75.1 KB Created: 2021-03-16 12:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 97841b77db9438f13bf0b43b7f01914e SHA-1: 93734e0ea1b934d66274ecad6f71b15e50b0308e SHA-256: 3796ab36b2c925eccca0d5bc0f5195cd4aef50b05239b46cbc2eb7dfcb226a36
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://ponafet.ru/strik?utm_term=dunkin+donuts+large+iced+coffee+black+calories PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414495/normal_5fdf6308aacc7.pdfIn PDF document text
    • http://popibiku.22web.org/believer_audio_song_masstamilan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_600ae02955f72.pdfIn PDF document text
    • http://findattime.com/xerosadowuxibulapemipoxot1akq0.pdfIn PDF document text
    • http://noxitafevinuv.22web.org/kusadadusinutakabe.pdfIn PDF document text
    • http://doucheapp.xyz/wario_land_super_mario_land_3_snes_rom8r274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489839/normal_60288bf948582.pdfIn PDF document text
    • http://claire-irk.ru/anand_movie_bgm_freech437.pdfIn PDF document text
    • http://abistrans.ru/currency_trading_for_dummies8xq1b.pdfIn PDF document text
    • http://craftsmansmetics.com/67370976664kzu76.pdfIn PDF document text
    • http://meetporte.xyz/cs_lewis_screwtape_letters_audiobook_freep9xln.pdfIn PDF document text
    • http://bigowet.xyz/88486853265rnthd.pdfIn PDF document text
    • http://world-wildshop.com/47676855246j4wie.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
    • https://s3.amazonaws.com/mefadedosuw/how_does_tarzan_speak_english.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/most_difficult_question_to_answer_in_science.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/49245405544.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/leposujakobowofaxetopoleb.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/paragraph_about_my_school_uniform.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_off0000d703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD703 5272 bytes
SHA-256: cb1a4247f82fd2a2a9fc89f2dac7d00a096db819d73bd40d0ff741781ccbcea0
font_01_sfnt_off0000e900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE900 11160 bytes
SHA-256: bafa5182cdb82873e629af16cb0bdbec6f9867a318729c03b811741c83b49afd
font_02_sfnt_off00010efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFC 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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