Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ebeb9d58dbefe2…

MALICIOUS

PDF

86.7 KB Created: 2021-03-18 09:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e3d1837738eb4d88a38266c0f464985 SHA-1: 4c8ced7c4e02838796ef65d6918d290e28a79c8c SHA-256: e2ebeb9d58dbefe29210417e61828ff97824150390e84d4d35c37a8665c63442
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, such as 'https://botokaw.ru/wix?keyword=middle+school+math+concepts', which likely lead to phishing or malware distribution sites. The presence of these links suggests the document is designed to trick users into visiting potentially harmful external resources, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=middle+school+math+concepts
    • http://menformula.xyz/zanisarep388.pdf
    • http://fopokigife.mywebcommunity.org/45540133427.pdf
    • https://kibanelamuvudu.weebly.com/uploads/1/3/0/9/130969844/nozaravik-xupuvijuvopuzo.pdf
    • https://cdn.sqhk.co/zonurubo/DghPZjg/easy_money_loan_apps.pdf
    • https://cdn.sqhk.co/figesuweno/vC2hgjf/65566177224.pdf
    • https://rolobidixogiru.weebly.com/uploads/1/3/1/6/131637372/wumedibosopu.pdf
    • https://turumokapitaka.weebly.com/uploads/1/3/4/6/134613572/8553825.pdf
    • http://xugafigipi.22web.org/worinotew.pdf
    • https://cdn.sqhk.co/xakalodesi/Jhathgf/remove_mounted_hard_drive_from_laptop.pdf
    • http://bulepozobagepud.mygamesonline.org/98305012139.pdf
    • https://cdn.sqhk.co/pozedezupase/haii5ps/21018475337.pdf
    • http://gewututikame.getenjoyment.net/cbse_class_11_accountancy_ncert_solutions.pdf
    • http://dimax-matrasy.ru/kuragujudumifanejim2kbs2.pdf
    • http://wobafobigo.mywebcommunity.org/polalupepodizafe.pdf
    • http://wabefovelixi.66ghz.com/benjamin_graham_security_analysis_free.pdf
    • https://cdn.sqhk.co/xanovixewin/OifVugg/full_form_of_army_kote.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zalisujezajaje/linegijisaw.pdf
    • http://funasuruwet.epizy.com/piano_sheets_roblox_faded.pdf
    • https://s3.amazonaws.com/zasepo/55238616749.pdf
    • http://fuvuxejuv.myartsonline.com/13957281161.pdf
    • https://s3.amazonaws.com/lovomijelun/xfinity_stream_app_for_samsung_tv.pdf
    • https://s3.amazonaws.com/tikoweravisixu/where_can_i_buy_a_thermal_fuse_for_my_maytag_dryer.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011782.bin
ac5973541448c57b0d51ee49ed1e7ac68e79e12dd117c82ad2053c7eb82ab9cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x11782 5224 bytes
font_01_sfnt_off00012929.bin
6d666f5fdf4bd494e45c43a3c6772b76f2fe84d3d4fbbf88bc70e1c4b1f0f76f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12929 10860 bytes