Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85ce93f59b22e00…

MALICIOUS

PDF

70.3 KB Created: 2021-02-08 08:50:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0145eb1e8b10b2a82cb9296c55403908 SHA-1: acf541660d03468508991117965001d0b9aa6158 SHA-256: e85ce93f59b22e00cfd4865309587ac9ca8ff801d0e03a6e53969c43820f711b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for compensation forms. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site for further exploitation.

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://maypoin.ru/wb?keyword=centrelink%20compensation%20form%20mod%20c
    • https://cdn-cms.f-static.net/uploads/4412377/normal_60155936eaff6.pdf
    • https://lawuzifelive.weebly.com/uploads/1/3/4/0/134041442/rasijojaxilomoduf.pdf
    • https://static.s123-cdn-static.com/uploads/4458428/normal_5fffe8f8b935a.pdf
    • https://xamezorunag.weebly.com/uploads/1/3/1/6/131606231/87fbd.pdf
    • http://wofoweniwer.iblogger.org/cessna_citation_bravo_performance.pdf
    • https://cdn-cms.f-static.net/uploads/4408174/normal_601bfe827320c.pdf
    • https://static.s123-cdn-static.com/uploads/4368997/normal_5ff07b7a4b6b1.pdf
    • https://nowagomasililub.weebly.com/uploads/1/3/0/7/130775830/mosesubenaw.pdf
    • https://static.s123-cdn-static.com/uploads/4403676/normal_5fe5800fb4203.pdf
    • https://cdn-cms.f-static.net/uploads/4420910/normal_5fda7f34427f8.pdf
    • https://bipuwuvi.weebly.com/uploads/1/3/0/7/130776795/pisogebor-pikoneruk-sevof-zanobudi.pdf
    • https://static.s123-cdn-static.com/uploads/4368243/normal_5ff16e0cae50f.pdf
    • https://rewapukin.weebly.com/uploads/1/3/5/9/135961798/86c0bf55ffb7ff4.pdf
    • https://static.s123-cdn-static.com/uploads/4417033/normal_5fef97f82c85d.pdf
    • https://static.s123-cdn-static.com/uploads/4365606/normal_5fee68013d706.pdf
    • https://romizipomubem.weebly.com/uploads/1/3/0/7/130775952/gujipil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wijogural.epizy.com/zivabozifiriwedasakubule.pdf
    • http://bedafenewax.rf.gd/crystal_reports_8._5.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_off0000d802.bin
957e96224dca57c836b580f02ebe1a88234fef9dd3d8174d86ce38d85d5c4d49
pdf-font-stream PDF embedded font (sfnt) at offset 0xD802 5268 bytes
font_01_sfnt_off0000e9d4.bin
9c901d6de8c01dae2bdc7ee97fa64d1ee8b1dfbdf030bf6e25c4e4c7a9a99c8e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D4 9968 bytes