Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23624789d48bbf3…

MALICIOUS

PDF

63.7 KB Created: 2020-12-03 03:17:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 03310d8c81c01212ec607f2829a021e8 SHA-1: 2260f7270eb7bb9582c881c60676bb4b444bc7d7 SHA-256: b23624789d48bbf3f6d6cc4cbca774e26c04b598b1f3899d1dbf621aaf4e42f5
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/strik?utm_term=prince+kuhio+theater PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378831/normal_5f8bea8e42478.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458622/normal_5fc735a218dc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0ed49fb7-221d-4674-9203-a1df3da3948f/perusevivojidutubunulunut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d70dc14dfd36fef128e0/t/5fc13facfa04221c714d7964/1606500269225/furalor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc396bb6457125654aa58ce/1606653632374/70823367560.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/pdf_acrobat_reader_professional_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/bahishti_zewar_urdu_download.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/2151713135.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7856643c5ee75bf2cb04e/t/5fc82de026a3037b4331c6b1/1606954466264/kulonumasepo.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/denefofavokan.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/chakras_significado.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/internship_report_conclusion.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB019 4624 bytes
SHA-256: 800e80329e25b42497de70233d9ad6740965934d95474c3d238201c8289b82ed
font_01_sfnt_off0000bfb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB4 10860 bytes
SHA-256: 8c559c7b4dc502e54e87de32cf8c6a6ace5707cd6ca1babdbf21616129b6ec16
font_02_sfnt_off0000e457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE457 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176