Malicious PDF — malware analysis report

Static analysis result for SHA-256 118566420bc0ce68…

MALICIOUS

PDF

66.0 KB Created: 2020-12-08 08:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 860150396bf860b9211d93138a7f08fd SHA-1: 705f6d36a7360724efd510a3525b4e1a3e0c6811 SHA-256: 118566420bc0ce6878deb8853d1debf0e05929abf0dffb999b846b6e64c714ce
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://cctraff.ru/wb?keyword=boogie%20nights%20hollywood%20full%20movie%20free', is designed to lead users to potentially harmful content. Another heuristic indicates a PDF link farm, suggesting a broader campaign to distribute malicious links.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/wb?keyword=boogie%20nights%20hollywood%20full%20movie%20free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f8b637481d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_5fa0e47c073da.pdfIn PDF document text
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/bawokopinok-wesuvojesinipe-dozovogu-bofotojanubi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410211/normal_5f9a25ba9c524.pdfIn PDF document text
    • https://fetevemukimagon.weebly.com/uploads/1/3/4/8/134896640/mewerigowam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/banula/forinu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc8344b7ff5a343ebec9d5e/1606956107570/giremu.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/vetego.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/kakisevelozofudajuziz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c3aad26ff1194f72fc70/t/5fc384dd08845d0924f6e4d9/1606649054015/22937722670.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc509ea5687f52b6b9bd065/t/5fcc278105ddc9599d118745/1607214977661/rome_total_war_mods_twcenter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54e7f5687f52b6b9e5b2d/t/5fc89fff6652ad59ec2d837d/1606983682093/76137837143.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/zidilezokaxasakukuma.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1162b68612547ed5f39f0/t/5fc1846a3c6ccf69f3977b07/1606517866808/late_nite_labs_ecology_answers.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_off0000c61d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC61D 5412 bytes
SHA-256: 046d677ae39abf52b1fc73a8268ec3f0dc35edfed384a245704ec2789e2ecfcd
font_01_sfnt_off0000d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD886 10248 bytes
SHA-256: 4e213f94b58be7ff2bd3b2fa88b74e4478e2e0e41e1255c55b959b01779c02de

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