Malicious PDF — malware analysis report

Static analysis result for SHA-256 29934f98c0fda76d…

MALICIOUS

PDF

76.1 KB Created: 2021-03-24 16:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 116be96e2ea73da68fc67352ea393e0a SHA-1: 86d1b1dbd7a44b477f6fbb2ed52a2acfddc4daf6 SHA-256: 29934f98c0fda76d40197cba532e8b6742b947d7cbaf4f165638dfc849de73c4
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'ponafet.ru' suggests a phishing attempt disguised as a strategy guide. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to exploit vulnerabilities or deliver further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/award?keyword=age+of+wonders+strategy+guide+pdf
    • https://cdn-cms.f-static.net/uploads/4494868/normal_600ae67250898.pdf
    • http://piroxopirov.22web.org/22923718620.pdf
    • https://cdn.sqhk.co/zegofurop/jbVTsZ3/the_jumping_frog_of_calaveras_county_characters.pdf
    • https://cdn.sqhk.co/gelowidabik/jihhrTv/car_performance_monitor_app.pdf
    • https://static.s123-cdn-static.com/uploads/4382418/normal_5ffc9deb708e4.pdf
    • https://cdn-cms.f-static.net/uploads/4489601/normal_60338198b99df.pdf
    • https://cdn.sqhk.co/vuxevabuvix/haggiie/entrepreneurship_and_small_business_management_assignment.pdf
    • https://cdn.sqhk.co/sipobufiw/jhakLN9/vedagojejivowasipilad.pdf
    • https://static.s123-cdn-static.com/uploads/4475000/normal_5ff230023c9dc.pdf
    • https://cdn.sqhk.co/rukugewul/vgjJvwq/86813757011.pdf
    • http://gewebud.22web.org/23226103102.pdf
    • https://static.s123-cdn-static.com/uploads/4371814/normal_5ff29293b1721.pdf
    • https://static.s123-cdn-static.com/uploads/4477163/normal_5fdf718ec1694.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zozuxukoxo/27168874278.pdf
    • http://taxisariwoboduz.epizy.com/gufefusupuz.pdf
    • http://lopumupukerodu.epizy.com/tanogubusajeladexojupe.pdf
    • https://s3.amazonaws.com/vitelitubovuluj/livuf.pdf
    • https://s3.amazonaws.com/podawakumepewez/whatsapp_for_pc_free_uptodown.pdf
    • http://wijijatalil.epizy.com/25778922574.pdf
    • https://s3.amazonaws.com/zaxawetawupo/soxife.pdf
    • https://s3.amazonaws.com/zabejuvijolu/tobijafigazadubufume.pdf
    • http://wobemiko.epizy.com/63747863227.pdf
    • http://nobosatif.epizy.com/petulegivorijunuweveterat.pdf
    • http://ketaxesam.epizy.com/nafiniverexizabubobage.pdf
    • http://lakekawe.rf.gd/catalina_stuck_on_calculating.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_off0000ea01.bin
f8d5fd934bc7f1fe93d966354dbf740f6ab165bfca1a38e8ce9a02caa03a1df3
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA01 5360 bytes
font_01_sfnt_off0000fc6e.bin
d0f5e63d9f01ec61fe0835760aea4b022213a57bfd353b48d2d7dbc0d531d886
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6E 10776 bytes