Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e8ac6e85f9c0ca…

MALICIOUS

PDF

72.5 KB Created: 2020-12-17 12:50:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e02dec7e2395f88bef5e77fe8679e4f6 SHA-1: 52fdac764e83880a2818e4a29664972136b53bcb SHA-256: 65e8ac6e85f9c0ca83415584adfa42cd78661301eacce456f7257f9afcfee332
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external URLs strongly suggest an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=thee+midniters+whittier+blvd PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377115/normal_5faba364cb543.pdfIn PDF document text
    • https://pexevirojaloko.weebly.com/uploads/1/3/4/8/134882405/3513789.pdfIn PDF document text
    • https://tagepixibupiz.weebly.com/uploads/1/3/4/5/134586800/jusalifivi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466151/normal_5fa5df931caec.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/ronununase.pdfIn PDF document text
    • https://jovawovifo.weebly.com/uploads/1/3/4/8/134883275/6618976.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393791/normal_5fa432479521c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380882/normal_5f909071b90d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5fba1b8b619df.pdfIn PDF document text
    • https://gideturifit.weebly.com/uploads/1/3/4/8/134887905/923a5.pdfIn PDF document text
    • https://gudozegibuxof.weebly.com/uploads/1/3/4/7/134732985/nonelebosi.pdfIn PDF document text
    • https://gijakumode.weebly.com/uploads/1/3/4/3/134306186/6105955.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd09911491241adc4757f0/1606224274145/99373386422.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51c99c6d96458363d5195/t/5fc6e4381d689b68bf8babde/1606870072614/sodipovarobegowada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c04963f-2996-401b-9146-470519eca45e/fejowozubi.pdfIn PDF document text
    • https://s3.amazonaws.com/jevuxozazebazug/catholic_funeral_songs_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/336c3e2d-ff86-4a4e-96dc-c23d8778a89a/31926885978.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/guidelines_meaning_sa_tagalog.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE030 5096 bytes
SHA-256: c2fb75cef4d1962600b9c0a4aad29a707a733e5b8c553394828bbf3a736fcada
font_01_sfnt_off0000f169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF169 10360 bytes
SHA-256: c0b6b69f1882a5e42df2ab30bf1f892aa6111d56e55ed3bf2ae0238334da3211

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