Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b3e115c53f6d6b…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 20:06:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 8c19fe9346884522454c2854a5f6315a SHA-1: 29f61f6bdf2b6ce0850f6b76e32fe0f1fdff5263 SHA-256: 64b3e115c53f6d6ba3a4236536ffbdf5fcceb2610378f8173e48c7ff27dd92ee
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=imax+b6+auto+charge+nimh PDF link annotation
    • https://cdn.sqhk.co/tijanukubo/eghuBih/50039229410.pdfIn PDF document text
    • https://cdn.sqhk.co/zinazejoras/8ihfPgc/futedesaw.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/the_devil_wears_prada_streaming_australia.pdfIn PDF document text
    • http://bcpzon4segurabetaviabcp.com/how_to_fix_le_error_on_lg_washing_machine81rpm.pdfIn PDF document text
    • http://fastpysystem.online/xizubukixxb7n1.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/can_i_substitute_vinegar_for_keurig_descaling_solution.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/white_boy_shuffle_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/29178815643.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/feterexer.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/57124871178.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/antivirus_software_for_android_devices.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/papawugefetuguno.pdfIn PDF document text
    • http://zevusup.atwebpages.com/woxapesataxusav.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/how_to_assess_your_leadership_skills.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/21000162328.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/picsart_free_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/81306183412.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F5 5300 bytes
SHA-256: 52734d82a60d862890551e04753bce137ed959e13423f99e289d1f7fce3a43fc
font_01_sfnt_off0000e2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DC 10540 bytes
SHA-256: 7623285972e414ba425adf778b03472daea055ad6511d8986af20782df702e38
font_02_sfnt_off00010744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10744 16164 bytes
SHA-256: 3afbc95f4a2677bf4c8b77bd7df62e4dbeb651db4b5e482cf97b58e472170d58

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