Malicious PDF — malware analysis report

Static analysis result for SHA-256 82c82a6cee28c8d7…

MALICIOUS

PDF

147.1 KB Created: 2021-03-21 10:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13846ff53fbd740f0fb12355c40d05c9 SHA-1: 7696ab0e00fd8a5a617d864c71202e3fdb18137f SHA-256: 82c82a6cee28c8d713d543ddc7a77204c6579d29f37c3845f3ce6ed99c85c7e4
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://zajinet.ru/strik?utm_term=blacked+out+through+whitewash+volume+2', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a date, but the primary threat appears to be the external URL.

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://zajinet.ru/strik?utm_term=blacked+out+through+whitewash+volume+2
    • http://zememor.sportsontheweb.net/ego-t_vape_pen_battery.pdf
    • http://mowogaw.mypressonline.com/the_avengers_2020_movie_script.pdf
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5fee2fa03fa4d.pdf
    • https://cdn.sqhk.co/giruzegovu/NhcsCHk/ravaw.pdf
    • http://bilkan.fun/vox_tonelab_st_vs_les5l4l.pdf
    • https://static.s123-cdn-static.com/uploads/4450156/normal_6008deb496b43.pdf
    • http://itfamily.info/mevebupuloqd.pdf
    • http://mateguwokalidub.getenjoyment.net/10685730481.pdf
    • https://cdn-cms.f-static.net/uploads/4412387/normal_603bc69f75eec.pdf
    • http://confirmyourverifiedbadge.com/lamixaxixadildlm9e.pdf
    • https://cdn.sqhk.co/kurinunuwor/iihi7ij/dojapixefatubikodukodibum.pdf
    • https://cdn-cms.f-static.net/uploads/4482188/normal_6055f3c672a10.pdf
    • http://regsenatvumen.website/zuxanupunarewowsyn2v.pdf
    • https://cdn.sqhk.co/fusunusol/jiicWhc/sejakolijexuluvefov.pdf
    • https://cdn.sqhk.co/riketumes/hchf05D/kogozipokeg.pdf
    • http://lojapidabud.mypressonline.com/psicologia_autoconhecimento.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xabulupemoze.rf.gd/wofexatefelivavijono.pdf
    • http://tuwesexo.epizy.com/finemoxosozox.pdf
    • http://kagijido.myartsonline.com/anorexia_nerviosa_y_amenorrea.pdf
    • http://tixumupugenatum.epizy.com/girl_scouts_chants.pdf
    • http://nuloporime.rf.gd/53301671363.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_off000203c5.bin
685ad184175c63c059d49580b4dfc661c67246fabf3c6c5aeaafab47e9f330ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x203C5 5748 bytes
font_01_sfnt_off0002174d.bin
1f36a98978fe46e7463cd09bc2200d8f1d9b83632f19aa2e707c099360db3074
pdf-font-stream PDF embedded font (sfnt) at offset 0x2174D 11640 bytes