Malicious PDF — malware analysis report

Static analysis result for SHA-256 def1bbd27ed64b11…

MALICIOUS

PDF

96.0 KB Created: 2021-02-14 20:37:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 43daa0b8f07d70ebdfdbe79ccaea9a5e SHA-1: 12ae783d55905dafb7c13f66efd9face9fccfdca SHA-256: def1bbd27ed64b11234dcab7554d527e8a94a113e93e896d58a15978a3035bf8
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URL that leads to a suspicious domain, likely intended to trick the user into downloading malware or visiting a phishing site. The document body, though partially corrupted, suggests a lure related to 'Beyblade burst game for pc'.

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://druttle.ru/wb?keyword=beyblade%20burst%20game%20%20for%20pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417543/normal_6026b08a07f3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463785/normal_5fe619bfb70b2.pdfIn PDF document text
    • http://lozaratoz.iblogger.org/antivirus_para_android_apk_uptodown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383928/normal_5ffa244469860.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494138/normal_5fcf06f64b496.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_6022c23226a7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489993/normal_600922e581368.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/eYhjaif/6142325920.pdfIn PDF document text
    • https://cdn.sqhk.co/wolitobutak/iEYuygj/bawoninuxaxiresijukajo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410004/normal_6001dead586bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495065/normal_5ff7767cc8eab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5fc934f6b073b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464082/normal_6008185a9c67a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393204/normal_5fc98705ae807.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A4E 5768 bytes
SHA-256: d63477230fcdc31cd2bdabadac1f48885014665a25e2915a2835a70788538adb
font_01_sfnt_off00014de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DE4 10992 bytes
SHA-256: aefb1ac6b4887f27e56bb6f1a96d04395a34ec2fce8e0b9d4f113170cb65b19f