Malicious PDF — malware analysis report

Static analysis result for SHA-256 1031f84b64cb31ec…

MALICIOUS

PDF

96.6 KB Created: 2021-03-25 00:53:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70024c81ef6b72c9240a6a418387b293 SHA-1: 7d40d00b324d6e2c5bbfef6d4fe4c9c7e0dd11e5 SHA-256: 1031f84b64cb31eccb79685a1d228899b495977160c5b9523818d0e5210e4637
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'missing ntuser.dat file windows 7' and embeds multiple URLs, one of which, 'https://botokaw.ru/strik?utm_term=missing+ntuser.dat+file+windows+7', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=missing+ntuser.dat+file+windows+7
    • http://tizezs.xyz/oxygen_not_included_advanced_guidegmapr.pdf
    • http://vodoroding.info/11368174975ac3u3.pdf
    • https://static.s123-cdn-static.com/uploads/4490251/normal_60034145ea0fb.pdf
    • https://fafotarume.weebly.com/uploads/1/3/1/0/131069904/sijikesimizudo_libemuja_lusugigosemal_ludebivowamaj.pdf
    • http://spainwow.pro/30077038053rfjer.pdf
    • https://zusamazoboxo.weebly.com/uploads/1/3/4/5/134527389/1b8c9.pdf
    • https://vuvugero.weebly.com/uploads/1/3/2/7/132710729/silaliluzakuj_repitemifikul.pdf
    • https://cdn-cms.f-static.net/uploads/4475995/normal_603a43a33e8a0.pdf
    • http://doordash.link/zajebegonalejaxoex.pdf
    • https://cdn-cms.f-static.net/uploads/4501660/normal_5fd157af4878a.pdf
    • https://sulunekuzesafap.weebly.com/uploads/1/3/1/4/131406846/jisunabejefesan.pdf
    • https://legobunisazej.weebly.com/uploads/1/3/4/5/134501617/b4621a.pdf
    • https://buginibonimej.weebly.com/uploads/1/3/2/7/132711973/lijojej-rogoruvimuv-tukaret.pdf
    • http://afracheat4.xyz/ar15_stripped_upper_receiver_-_fde_cerakotehr94d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4a4db765-258a-4b77-8622-86217c376a47/rosokufofedos.pdf
    • http://worubag.epizy.com/60888859463.pdf
    • http://fifomivosa.rf.gd/alan_walker_spectre.pdf
    • https://uploads.strikinglycdn.com/files/c7207636-0139-4858-b816-8089f0a4bcd7/55962087563.pdf
    • https://uploads.strikinglycdn.com/files/ea36bb2f-40d0-40f8-978f-c446401c7873/janefefebozifowup.pdf
    • https://uploads.strikinglycdn.com/files/4695260e-a5b9-439a-a2ad-e17b76fdb8c0/sizalibedaj.pdf
    • https://uploads.strikinglycdn.com/files/c6a0e26c-3cbf-4355-b1a5-c050fe98dd12/soundarya_lahari_isha_lyrics_meaning.pdf
    • http://fexotupakel.rf.gd/78377337681.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_off00013ea4.bin
4c8927f4613c154dad30373c3cd50073e81f0db51bfc94b707d50b1a4c8b1809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EA4 5284 bytes
font_01_sfnt_off000150d5.bin
1c5da6a3b9c5330ade03593acd34506878e5026bf981cede20950e4373961b42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150D5 10684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.