Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8e1da36713da7be…

MALICIOUS

PDF

70.2 KB Created: 2020-11-18 13:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 57d6647260827dc337d161944b51da91 SHA-1: 97e733e8da8f406d9393b9cf8bca2449a305e7cd SHA-256: b8e1da36713da7be2a4f26379955e3a56b091e3577abc0e8f2b1c7fc338546c2
104 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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/aws?utm_term=higher+education+haryana+date+sheet+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391327/normal_5f91f793138f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f89830fbb628.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402953/normal_5f91ee66b62a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444866/normal_5fa60c0b52284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484605/normal_5fae282a9bc87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f8e2c2a2df22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410447/normal_5fafbb5ab601b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480735/normal_5faf0946c69dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420244/normal_5faa2abbd9ea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fad97dcd1f68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478133/normal_5fa5c476208aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484122/normal_5fad82a09bc50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413976/normal_5f99159bc5125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f9743c58c4d2.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_off0000d517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD517 5716 bytes
SHA-256: d9ffac8315264c99b7408a7aa70c74ff3b8be93988a14e671f9c1abf94c7124f
font_01_sfnt_off0000e88e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88E 10340 bytes
SHA-256: 51a8a7256dbae681e3b7a27c2736da6982e8929f8303ed82fbda6e0f5907a7e4