Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e63962fc39b925a…

MALICIOUS

PDF

179.6 KB Created: 2021-04-04 06:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0baebe91e8e28773da947e8990d57bc3 SHA-1: bf11f3258dc068724a23c2e13e5bd4abc05da76e SHA-256: 1e63962fc39b925aa144fa52e264e41496d1d68126038164d1d5fe75f4575bce
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs pointing to potentially malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a compromised or malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://vilenefex.ru/wix?keyword=probability+tree+with+replacement+worksheet
    • http://fuxutigox.mypressonline.com/memoria_arquitectura_de_computadoras.pdf
    • http://xijipeva.mypressonline.com/bagukojogomofeloxu.pdf
    • https://cdn.sqhk.co/madufuxenuw/ejijh4I/58512504695.pdf
    • http://rivilidopu.medianewsonline.com/76503743622.pdf
    • https://cdn-cms.f-static.net/uploads/4446942/normal_5fd17ddd438c6.pdf
    • https://static.s123-cdn-static.com/uploads/4390324/normal_5fe1d7094a692.pdf
    • https://cdn.sqhk.co/bezakebijuk/baOifhf/download_idle_port_tycoon_mod_apk_android_1.pdf
    • https://cdn-cms.f-static.net/uploads/4369665/normal_60582056f22d8.pdf
    • https://cdn.sqhk.co/jumosanex/idhggjO/4900492889.pdf
    • https://cdn-cms.f-static.net/uploads/4454682/normal_6042c4ac5a9c5.pdf
    • https://static.s123-cdn-static.com/uploads/4500883/normal_5fed185290700.pdf
    • http://lumobumekola.getenjoyment.net/bill_phillips_body_for_life_diet.pdf
    • https://cdn.sqhk.co/vexedobasof/hehhHCQ/38504156815.pdf
    • https://cdn.sqhk.co/zamikukodef/jE7CX9j/33001361414.pdf
    • http://rejemezurufoveg.mywebcommunity.org/benumof_and_hagberg_s_airway_management_3rd_edition.pdf
    • https://cdn-cms.f-static.net/uploads/4464534/normal_603e3e04a0aeb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_a6f1417892c14d719ed256db4a57d1ff.pdf?index=true
    • https://33da92c3-26de-4f6b-bf12-1693cb6a6e79.filesusr.com/ugd/0307f2_81f77656a21a42d7b2da687ef3f5e421.pdf?index=true
    • http://suvalomimo.atwebpages.com/3ds_max_tutorials_2020.pdf
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_69739cb3ca12470db5647e3fddbf5163.pdf?index=true
    • http://jumepenitujox.atwebpages.com/6305739606.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_off0002869d.bin
695b05f25881d1e91aeccac439cddd6345e8de2dc7d3bcf537debbe39640a585
pdf-font-stream PDF embedded font (sfnt) at offset 0x2869D 5572 bytes
font_01_sfnt_off00029973.bin
b688ba59a7ee32823665bf9f704fc25221e89166709cde540573990e2c3d5680
pdf-font-stream PDF embedded font (sfnt) at offset 0x29973 11268 bytes