Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3eb4991814e6b9…

MALICIOUS

PDF

65.5 KB Created: 2020-12-26 02:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 1ea0d0e8ce803efbdf0e330d792aad49 SHA-1: 562de6ae86e9930f27ac3ee67d5fba5f968d4d15 SHA-256: cb3eb4991814e6b90a20b39be68d9d803b91cb09f39452696964496039f1f855
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to suspicious domains, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs, particularly 'https://trafftec.ru/strik?utm_term=need+for+speed+most+wanted+2005+para+ps3', are likely used to redirect users to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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=need+for+speed+most+wanted+2005+para+ps3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490244/normal_5fb40bc0264b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393639/normal_5fcc45d131dd9.pdfIn PDF document text
    • https://tajuzoliv.weebly.com/uploads/1/3/4/3/134359899/5432871.pdfIn PDF document text
    • https://durezawower.weebly.com/uploads/1/3/4/4/134472500/noguvufeb.pdfIn PDF document text
    • https://sepanafawo.weebly.com/uploads/1/3/4/3/134316973/8400707.pdfIn PDF document text
    • https://jenejipita.weebly.com/uploads/1/3/4/4/134473981/nuzuvevufiximemoxas.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/jowutoneranemuk/fagomakanalusebimubuviw.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/solar_panel_technical_specification.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/64292771698.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/43543530323.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_off0000c12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC12B 5780 bytes
SHA-256: 708db7f04c576a17264df5e53551d5b91cec32e1176b5a4250246991c53b9c00
font_01_sfnt_off0000d4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DC 10932 bytes
SHA-256: cc807c7bc2d0ba6100f0e9ded4da77d01969f697a67e0f75935d3f0a06f2b5d4

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